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• Sharepoint Search crawl not working

  - by Satish

  Search Crawling is error out on my MOSS 2007 installation. I get the following error for all the web apps I have following error in Crawl logs. http://mysites.devserver URL could not be resolved. The host may be unavailable, or the proxy settings are not configured correctly on the index server. The Application Event log also has the following corresponding error The start address http://mysites.devserver cannot be crawled. Context: Application 'SSPMain', Catalog 'Portal_Content' Details: The URL of the item could not be resolved. The repository might be unavailable, or the crawler proxy settings are not configured. To configure the crawler proxy settings, use the Proxy and Timeout page in search administration. (0x80041221) I'm using Windows 2008 server. I tried accessing the site using the above mentioned url and its available. I did the registry setting for loop back issue found here http://support.microsoft.com/kb/896861 still not luck. Any Ideas?

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• Regex expresion in MS SQL

  - by adopilot

  I do not not know much about Regex, I want to try parsing sting from database according to flowing instructions. I know that I am need to use CLR but for begin I want to learn Regex Data in tables look like create table #tempTBL (opis varchar(40)) go insert into #tempTBL select 'C 136' union select 'C 145' union select 'C146' union select 'AK C 182' union select 'C 277' union select 'C-240' union select 'ISPRAVKA PO C 241' And select sting looks like Select reverse( rtrim( ltrim( replace( (substring (reverse(opis) ,0 ,charindex( 'C',reverse(opis) ) ) ) ,'-',' ') ) ) ) as jci from #tempTBL How should looks like my C# code to I repeat this using regex

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• Best practice for authenticating DMZ against AD in LAN

  - by Sergei

  We have few customer facing servers in DMZ that also have user accounts , all accounts are in shadow password file. I am trying to consolidate user logons and thinking about letting LAN users to authenticate against Active Directory.Services needing authentication are Apache, Proftpd and ssh. After consulting security team I have setup authentication DMZ that has LDAPS proxy that in turn contacts another LDAPS proxy (proxy2) in LAN and this one passes authentication info via LDAP (as LDAP bind) to AD controller.Second LDAP proxy only needed because AD server refuses speak TLS with our secure LDAP implemetation. This works for Apache using appropriate module.At a later stage I may try to move customer accounts from servers to LDAP proxy so they are not scattered around servers. For SSH I joined proxy2 to Windows domain so users can logon using their windows credentials.Then I created ssh keys and copied them to DMZ servers using ssh-copy, to enable passwordless logon once users are authenticated. Is this a good way to implement this kind of SSO?Did I miss any security issues here or maybe there is a better way ofachieving my goal?

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• How often is CRL refreshed, and how to force it to be?

  - by lockstock

  I have a web service running under IIS 7 that requires an X509 client certificate. I know that the server that it rus on needs access to DigiCert.com in order to be able to get the CRL (Certificate Revocation List). There is a need to change our proxy so I am attempting to investigate the impact of doing so. I have removed the global proxy settings using the command netsh winhttp proxy refesh, and also deleted the CRL cache using the command certutil -URLcache CRL delete. However, after doing this, all calls to the web service still succeed. This suggests to me that I am missing something here. So; If the CRL cache is cleared and the server has no way of refreshing the CRL, why do web service requets not return http 403?. I have been unable to find adequate information from googling nor from my colleagues. The reason I want it to fail is that I will not be confident that the new proxy settings work until I can see it broken first, if that makes sense. I would also like to be able to force the CRL to be refeshed in order to ensure that the new proxy settings work

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• VMware virtual machine network devices malfunctioning

  - by sheepz

  I'm running Ubuntu 10.04 LTS and VMvware workstation 7.0.1 build-227600. The virtual machine i'm running in VMware is a custom distribution built on Debian Linux version 3.1. I'm still pretty much a beginner with UNIX administration. After having messed around with the vmware (changed only the name of the folder, the vmx and and other .v* files accordingly in which the .vmx was situated, and the configuration in the vmx file accordingly), the network devices on the virtual machine do not work anymore. The virtual machine is used for securely sending messages. The virtual machine: As far as I know, this perl file called proxy-gen-ifalias eth0 is responsible for properly setting up the two virtual network devices eth0 and eth1. The Virtual machine comes with a GUI interface in which I have set up two ethernet network devices, one internal, the other external. Now, after having messed around with this, the UI gives me this error message: perl proxy-gen-ifalias eth0 /etc/modprobe.d/alias-eth0 /sbin/update-modules perl proxy-gen-ifalias eth1 /etc/modprobe.d/alias-eth1 /sbin/update-modules ifdown eth0 ifdown: interface eth0 not configured ifdown eth1 ifdown: interface eth1 not configured perl proxy-gen-netcfg /etc/network/interfaces ifup eth0 SICCSIFADDR: No such device eth0: ERROR while getting interface flags: No such device SIOCSIFNETMASK: No such device eth0: ERROR while getting interface flags: No such device Failed to bring up eth0. ifconfig eth0 eth0: error fetching interface information: Device not found make: *** [/etc/network/interfaces] Error 1 ~ Here are the contents of the two perl files referred to in the message: paste.pocoo.org/show/2AMzAYhoCRZqlGY7wUFk/ proxy-gen-netcfg

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• Relay Access Denied (State 13) Postfix + Dovecot + Mysql

  - by Pierre Jeptha

  So we have been scratching our heads for quite some time over this relay issue that has presented itself since we re-built our mail-server after a failed Webmin update. We are running Debian Karmic with postfix 2.6.5 and Dovecot 1.1.11, sourcing from a Mysql database and authenticating with SASL2 and PAM. Here are the symptoms of our problem: 1) When users are on our local network they can send and receive 100% perfectly fine. 2) When users are off our local network and try to send to domains not of this mail server (ie. gmail) they get the "Relay Access Denied" error. However users can send to domains of this mail server when off the local network fine. 3) We host several virtual domains on this mailserver, the primary domain being airnet.ca. The rest of our virtual domains (ex. jeptha.ca) cannot receive email from domains not hosted by this mailserver (ie. gmail and such cannot send to them). They receive bounce backs of "Relay Access Denied (State 13)". This is regardless of whether they are on our local network or not, which is why it is so urgent for us to get this solved. Here is our main.cf from postfix: myhostname = mail.airnet.ca mydomain = airnet.ca smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no smtpd_sasl_type = dovecot queue_directory = /var/spool/postfix smtpd_sasl_path = private/auth smtpd_sender_restrictions = permit_mynetworks permit_sasl_authenticated smtp_sasl_auth_enable = yes smtpd_sasl_auth_enable = yes append_dot_mydomain = no readme_directory = no smtp_tls_security_level = may smtpd_tls_security_level = may smtp_tls_note_starttls_offer = yes smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_auth_only = no alias_maps = proxy:mysql:/etc/postfix/mysql/alias.cf hash:/etc/aliases alias_database = hash:/etc/aliases mydestination = mail.airnet.ca, airnet.ca, localhost.$mydomain mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 recipient_delimiter = + local_recipient_maps = $alias_maps $virtual_mailbox_maps proxy:unix:passwd.byname home_mailbox = /var/virtual/ mail_spool_directory = /var/spool/mail mailbox_transport = maildrop smtpd_helo_required = yes disable_vrfy_command = yes smtpd_etrn_restrictions = reject smtpd_data_restrictions = reject_unauth_pipelining, permit show_user_unknown_table_name = no proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps $virtual_uid_maps $virtual_gid_maps virtual_alias_domains = message_size_limit = 20971520 transport_maps = proxy:mysql:/etc/postfix/mysql/vdomain.cf virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql/vmailbox.cf virtual_alias_maps = proxy:mysql:/etc/postfix/mysql/alias.cf hash:/etc/mailman/aliases virtual_uid_maps = proxy:mysql:/etc/postfix/mysql/vuid.cf virtual_gid_maps = proxy:mysql:/etc/postfix/mysql/vgid.cf virtual_mailbox_base = / virtual_mailbox_limit = 209715200 virtual_mailbox_extended = yes virtual_create_maildirsize = yes virtual_mailbox_limit_maps = proxy:mysql:/etc/postfix/mysql/vmlimit.cf virtual_mailbox_limit_override = yes virtual_mailbox_limit_inbox = no virtual_overquote_bounce = yes virtual_minimum_uid = 1 maximal_queue_lifetime = 1d bounce_queue_lifetime = 4h delay_warning_time = 1h append_dot_mydomain = no qmgr_message_active_limit = 500 broken_sasl_auth_clients = yes smtpd_sasl_path = private/auth smtpd_sasl_local_domain = $myhostname smtpd_sasl_security_options = noanonymous smtpd_sasl_authenticated_header = yes smtp_bind_address = 142.46.193.6 relay_domains = $mydestination mynetworks = 127.0.0.0, 142.46.193.0/25 inet_interfaces = all inet_protocols = all And here is the master.cf from postfix: # ========================================================================== # service type private unpriv chroot wakeup maxproc command + args # (yes) (yes) (yes) (never) (100) # ========================================================================== smtp inet n - - - - smtpd #submission inet n - - - - smtpd # -o smtpd_tls_security_level=encrypt # -o smtpd_sasl_auth_enable=yes # -o smtpd_client_restrictions=permit_sasl_authenticated,reject # -o milter_macro_daemon_name=ORIGINATING #smtps inet n - - - - smtpd # -o smtpd_tls_wrappermode=yes # -o smtpd_sasl_auth_enable=yes # -o smtpd_client_restrictions=permit_sasl_authenticated,reject # -o milter_macro_daemon_name=ORIGINATING #628 inet n - - - - qmqpd pickup fifo n - - 60 1 pickup cleanup unix n - - - 0 cleanup qmgr fifo n - n 300 1 qmgr #qmgr fifo n - - 300 1 oqmgr tlsmgr unix - - - 1000? 1 tlsmgr rewrite unix - - - - - trivial-rewrite bounce unix - - - - 0 bounce defer unix - - - - 0 bounce trace unix - - - - 0 bounce verify unix - - - - 1 verify flush unix n - - 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap smtp unix - - - - - smtp # When relaying mail as backup MX, disable fallback_relay to avoid MX loops relay unix - - - - - smtp -o smtp_fallback_relay= # -o smtp_helo_timeout=5 -o smtp_connect_timeout=5 showq unix n - - - - showq error unix - - - - - error retry unix - - - - - error discard unix - - - - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - - - - lmtp anvil unix - - - - 1 anvil scache unix - - - - 1 scache maildrop unix - n n - - pipe flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient} # # See the Postfix UUCP_README file for configuration details. # uucp unix - n n - - pipe flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient) # # Other external delivery methods. # ifmail unix - n n - - pipe flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient) bsmtp unix - n n - - pipe flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient scalemail-backend unix - n n - 2 pipe flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension} mailman unix - n n - - pipe flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop} ${user} spfpolicy unix - n n - - spawn user=nobody argv=/usr/bin/perl /usr/sbin/postfix-policyd-spf-perl smtp-amavis unix - - n - 4 smtp -o smtp_data_done_timeout=1200 -o smtp_send_xforward_command=yes -o disable_dns_lookups=yes #127.0.0.1:10025 inet n - n - - smtpd dovecot unix - n n - - pipe flags=DRhu user=dovecot:21pever1lcha0s argv=/usr/lib/dovecot/deliver -d ${recipient Here is Dovecot.conf protocols = imap imaps pop3 pop3s disable_plaintext_auth = no log_path = /etc/dovecot/logs/err info_log_path = /etc/dovecot/logs/info log_timestamp = "%Y-%m-%d %H:%M:%S ". syslog_facility = mail ssl_listen = 142.46.193.6 ssl_disable = no ssl_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem ssl_key_file = /etc/ssl/private/ssl-cert-snakeoil.key mail_location = mbox:~/mail:INBOX=/var/virtual/%d/mail/%u mail_privileged_group = mail mail_debug = yes protocol imap { login_executable = /usr/lib/dovecot/imap-login mail_executable = /usr/lib/dovecot/rawlog /usr/lib/dovecot/imap mail_executable = /usr/lib/dovecot/gdbhelper /usr/lib/dovecot/imap mail_executable = /usr/lib/dovecot/imap imap_max_line_length = 65536 mail_max_userip_connections = 20 mail_plugin_dir = /usr/lib/dovecot/modules/imap login_greeting_capability = yes } protocol pop3 { login_executable = /usr/lib/dovecot/pop3-login mail_executable = /usr/lib/dovecot/pop3 pop3_enable_last = no pop3_uidl_format = %08Xu%08Xv mail_max_userip_connections = 10 mail_plugin_dir = /usr/lib/dovecot/modules/pop3 } protocol managesieve { sieve=~/.dovecot.sieve sieve_storage=~/sieve } mail_plugin_dir = /usr/lib/dovecot/modules/lda auth_executable = /usr/lib/dovecot/dovecot-auth auth_process_size = 256 auth_cache_ttl = 3600 auth_cache_negative_ttl = 3600 auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ auth_verbose = yes auth_debug = yes auth_debug_passwords = yes auth_worker_max_count = 60 auth_failure_delay = 2 auth default { mechanisms = plain login passdb sql { args = /etc/dovecot/dovecot-sql.conf } userdb sql { args = /etc/dovecot/dovecot-sql.conf } socket listen { client { path = /var/spool/postfix/private/auth mode = 0660 user = postfix group = postfix } master { path = /var/run/dovecot/auth-master mode = 0600 } } } Please, if you require anything do not hesistate, I will post it ASAP. Any help or suggestions are greatly appreciated! Thanks, Pierre

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• nginx + varnish + apache differente IPs in VirtualHost Apache

  - by zeusgod

  Hi, My idea is put NGINX as proxy to redirect to Varnish (cache static content) and then proxy to apache with a lot of VirtualHost in different IPs. My problems is that I would know how can configure Varnish to send access to correct IP, I am going explain: NGINX: Listen in: 10.10.10.10, 20.20.20.20 and 30.30.30.30 on ports: 80 and 443 Proxy redirect to Varnish 10.10.10.10:8080, 20.20.20.20:8080 and 30.30.30.30:8080 Varnish: Port: 8080 - THIS IS THE PROBLEM Proxy content not static to Apache on port 8000 - THIS IS THE OTHER PROBLEM Apache2: Listen in: 10.10.10.10:8000, 20.20.20.20:8000 and 30.30.30.30:8000 Response correct VirtualHost This is the idea. When I try with one IP only, all work correctly, because Varnish is only listen in one IP and port and send to backend in one IP and port too. Could you help me to configure Varnish or there is a best way to configure similar scenario please?

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• nginx connection pool race condition?

  - by wlf

  I have a shared hosting server with high traffic. I have a lightweight apache mod_proxy for static content that from time to time has a "504 proxy error" problem proxing to apache/mod_php. Error log says: error reading status line from remote server 127.0.0.1:8080 Error reading from remote server returned by / This is what the apache documentation says about it. proxy-initial-not-pooled If this variable is set no pooled connection will be reused if the client connection is an initial connection. This avoids the "proxy: error reading status line from remote server" error message caused by the race condition that the backend server closed the pooled connection after the connection check by the proxy and before data sent by the proxy reached the backend. It has to be kept in mind that setting this variable downgrades performance, especially with HTTP/1.0 clients. I am really concerned about this downgrade in performance therefore I started to look at nginx immediately. I am new to nginx and time is crucial right now, I can't afford to waste days to study it just to find out there is the same race condition issue. Is nginx affected by this connection pool race condition? Thanks

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• Using WinSCP with SSH server and 2 machine hops

  - by Mike

  I'm on a windows machine using putty to ssh into my schools server. From there I need to "slogin -XY machine1" and then "slogin -XY machine2" . Ideally, I'd like to use WinSCP to connect and transfer files. I know I can do this by using two copies of PuTTY , one to ssh into the server and create a proxy, and the second PuTTY to connect to the proxy and login to machine1 and create a second proxy. I can then use winSCP to connect to the proxy server and login to machine2... Is there a simpler way of doing this?

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• Mail server not sending or receiving after removal from barracuda blacklist to white list

  - by user137765

  Mail server not sending or receiving after removal from barracuda blacklist to white list. I've checked against black lists and the ip and domain are clean. 1and1 are saying its Barracuda black list and barracuda are saying its not blacklisted and that its somethign with 1and1 server. section from log file... Sep 20 04:29:25 vegaserve postfix/smtpd[16906]: connect from mta860.chtah.net[63.236.31.146] Sep 20 04:29:25 vegaserve postfix/smtpd[16070]: connect from host81-136-144-117.in-addr.btopenworld.com[81.136.144.117] Sep 20 04:29:27 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: raidon - short names not allowed from @ [201.80.253.153]ERR: 1348111767.185119 LOGOUT, [email protected], ip=[86.143.136.249], top=0, retr=0, time=151, rcvd=18, sent=283, maildir=/var/qmail/mailnames/mbelectrics.net/mb/Maildir Sep 20 04:29:28 vegaserve pop3d: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:28 vegaserve postfix/smtpd[15388]: connect from mta965.emails.itv.com[8.30.201.55] Sep 20 04:29:29 vegaserve postfix/smtpd[18194]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:29 vegaserve postfix/cleanup[24879]: 95CB31E87556C: message-id=<[email protected] Sep 20 04:29:29 vegaserve postfix/qmgr[14378]: 95CB31E87556C: from=, size=975, nrcpt=1 (queue active) Sep 20 04:29:29 vegaserve postfix/smtpd[18194]: disconnect from uspmta172097.emarsys.net[195.54.172.97] Sep 20 04:29:29 vegaserve postfix/smtp[25748]: 95CB31E87556C: to=, orig_to=, relay=none, delay=0.05, delays=0.05/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:29 vegaserve postfix/bounce[25897]: warning: 95CB31E87556C: undeliverable postmaster notification discarded Sep 20 04:29:29 vegaserve postfix/qmgr[14378]: 95CB31E87556C: removed Sep 20 04:29:32 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:29:37 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: rei - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:38 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:29:38 vegaserve postfix/smtpd[19328]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:40 vegaserve postfix/smtpd[18331]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:40 vegaserve postfix/smtpd[24464]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:40 vegaserve postfix/cleanup[24825]: BD1A71E87556C: message-id=<[email protected] Sep 20 04:29:40 vegaserve postfix/qmgr[14378]: BD1A71E87556C: from=, size=673, nrcpt=1 (queue active) Sep 20 04:29:40 vegaserve postfix/smtpd[24464]: disconnect from unknown[118.97.212.190] Sep 20 04:29:40 vegaserve postfix/smtp[25748]: BD1A71E87556C: to=, orig_to=, relay=none, delay=0.04, delays=0.04/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:40 vegaserve postfix/bounce[25995]: warning: BD1A71E87556C: undeliverable postmaster notification discarded Sep 20 04:29:40 vegaserve postfix/qmgr[14378]: BD1A71E87556C: removed Sep 20 04:29:41 vegaserve postfix/cleanup[24879]: 0A42B1E87556C: message-id=<[email protected] Sep 20 04:29:41 vegaserve postfix/qmgr[14378]: 0A42B1E87556C: from=, size=961, nrcpt=1 (queue active) Sep 20 04:29:41 vegaserve postfix/smtpd[18331]: disconnect from bay0-omc4-s10.bay0.hotmail.com[65.54.190.212] Sep 20 04:29:41 vegaserve postfix/smtp[25748]: 0A42B1E87556C: to=, orig_to=, relay=none, delay=0.03, delays=0.03/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:41 vegaserve postfix/bounce[25897]: warning: 0A42B1E87556C: undeliverable postmaster notification discarded Sep 20 04:29:41 vegaserve postfix/qmgr[14378]: 0A42B1E87556C: removed Sep 20 04:29:43 vegaserve postfix/smtpd[17511]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:43 vegaserve postfix/cleanup[24825]: 8F8991E87556C: message-id=<[email protected] Sep 20 04:29:43 vegaserve postfix/qmgr[14378]: 8F8991E87556C: from=, size=946, nrcpt=1 (queue active) Sep 20 04:29:43 vegaserve postfix/smtpd[17511]: disconnect from blu0-omc4-s22.blu0.hotmail.com[65.55.111.161] Sep 20 04:29:43 vegaserve postfix/smtp[25748]: 8F8991E87556C: to=, orig_to=, relay=none, delay=0.05, delays=0.02/0/0.02/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:43 vegaserve postfix/bounce[25995]: warning: 8F8991E87556C: undeliverable postmaster notification discarded Sep 20 04:29:43 vegaserve postfix/qmgr[14378]: 8F8991E87556C: removed Sep 20 04:29:44 vegaserve postfix/cleanup[24879]: 088641E87556C: message-id=<[email protected] Sep 20 04:29:44 vegaserve postfix/qmgr[14378]: 088641E87556C: from=, size=1078, nrcpt=1 (queue active) Sep 20 04:29:44 vegaserve postfix/smtpd[19328]: disconnect from smtp10.bis7.eu.blackberry.com[178.239.85.15] Sep 20 04:29:44 vegaserve postfix/smtp[25748]: 088641E87556C: to=, orig_to=, relay=none, delay=0.05, delays=0.03/0/0.01/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:44 vegaserve postfix/bounce[25995]: warning: 088641E87556C: undeliverable postmaster notification discarded Sep 20 04:29:44 vegaserve postfix/qmgr[14378]: 088641E87556C: removed Sep 20 04:29:44 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: rin - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:44 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:29:44 vegaserve postfix/smtpd[18965]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:44 vegaserve postfix/cleanup[24825]: 946F51E87556C: message-id=<[email protected] Sep 20 04:29:44 vegaserve postfix/qmgr[14378]: 946F51E87556C: from=, size=1173, nrcpt=1 (queue active) Sep 20 04:29:44 vegaserve postfix/smtpd[18965]: disconnect from hubrelay-rd.bt.com[62.239.224.99] Sep 20 04:29:44 vegaserve postfix/smtp[25748]: 946F51E87556C: to=, orig_to=, relay=none, delay=0.04, delays=0.04/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:44 vegaserve postfix/bounce[25897]: warning: 946F51E87556C: undeliverable postmaster notification discarded Sep 20 04:29:44 vegaserve postfix/qmgr[14378]: 946F51E87556C: removed Sep 20 04:29:45 vegaserve postfix/smtpd[14816]: connect from col0-omc2-s12.col0.hotmail.com[65.55.34.86] Sep 20 04:29:47 vegaserve postfix/smtpd[16900]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:29:47 vegaserve postfix/cleanup[24879]: 961721E87556C: message-id=<[email protected] Sep 20 04:29:47 vegaserve postfix/qmgr[14378]: 961721E87556C: from=, size=1082, nrcpt=1 (queue active) Sep 20 04:29:47 vegaserve postfix/smtpd[16900]: disconnect from mta-35d2.livingsocial.com[199.91.53.210] Sep 20 04:29:47 vegaserve postfix/smtp[25748]: 961721E87556C: to=, orig_to=, relay=none, delay=0.04, delays=0.04/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:29:47 vegaserve postfix/bounce[25995]: warning: 961721E87556C: undeliverable postmaster notification discarded Sep 20 04:29:47 vegaserve postfix/qmgr[14378]: 961721E87556C: removed Sep 20 04:29:50 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: rini - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:50 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:29:52 vegaserve postfix/smtpd[24478]: connect from col0-omc2-s13.col0.hotmail.com[65.55.34.87] Sep 20 04:29:52 vegaserve postfix/smtpd[18923]: connect from www.idbwplan.com[193.181.254.21] Sep 20 04:29:55 vegaserve postfix/smtpd[15968]: connect from 105-48.mta.dotmailer.com[94.143.105.48] Sep 20 04:29:56 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: ringo - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:29:56 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:30:00 vegaserve postfix/smtpd[18772]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:30:01 vegaserve postfix/cleanup[24825]: 1DAD71E87556C: message-id=<[email protected] Sep 20 04:30:01 vegaserve postfix/qmgr[14378]: 1DAD71E87556C: from=, size=1022, nrcpt=1 (queue active) Sep 20 04:30:01 vegaserve postfix/smtpd[18772]: disconnect from mail95.us2.mcsv.net[173.231.139.95] Sep 20 04:30:01 vegaserve postfix/smtp[25748]: 1DAD71E87556C: to=, orig_to=, relay=none, delay=0.06, delays=0.05/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself) Sep 20 04:30:01 vegaserve postfix/bounce[25897]: warning: 1DAD71E87556C: undeliverable postmaster notification discarded Sep 20 04:30:01 vegaserve postfix/qmgr[14378]: 1DAD71E87556C: removed Sep 20 04:30:02 vegaserve pop3d: IMAP connect from @ [201.80.253.153]checkmailpasswd: FAILED: ritsuko - short names not allowed from @ [201.80.253.153]ERR: LOGIN FAILED, ip=[201.80.253.153] Sep 20 04:30:02 vegaserve postfix/smtpd[16911]: warning: connect to proxy service 127.0.0.1:10025: Connection timed out Sep 20 04:30:02 vegaserve pop3d: Connection, ip=[201.80.253.153] Sep 20 04:30:02 vegaserve postfix/cleanup[24879]: 8AADD1E87556C: message-id=<[email protected] Sep 20 04:30:02 vegaserve postfix/qmgr[14378]: 8AADD1E87556C: from=, size=1003, nrcpt=1 (queue active) Sep 20 04:30:02 vegaserve postfix/smtpd[16911]: disconnect from mr133.createsend.com[184.106.86.133] Sep 20 04:30:02 vegaserve postfix/smtp[25748]: 8AADD1E87556C: to=, orig_to=, relay=none, delay=0.02, delays=0.02/0/0/0, dsn=5.4.6, status=bounced (mail for vegaserve.com loops back to myself)

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• Wildcard DNS setting in Windows Server 2008 R2 DNS Server not working

  - by mattmcmanus

  We've got a windows server 2008 R2 DNS server that we are trying to setup a wildcard DNS entry in. So we want proxy.domain.com and *.proxy.domain.com to go to the same IP. Right now, it seems as if the windows server has registered the actual asterisk as the subdomain. So *.proxy.domain.com resolves to the right IP but something like login.proxy.domain.com doesn't. This seems to be a problem specifically with 2008 because we were able to get this working on a 2003 server. Has anyone come across this yet?

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• Unable to use Gmail in Thunderbird 3

  - by Jatin Ganhotra

  Mozilla Thunderbird v.3.1.7 I am trying to setup Gmail, but none of the settings are working. I have tried every resource: Blogs, tutorials Instructions by Google Instructions by Thunderbird Questions here But, still its not working. My settings are as follows Server Settings Server Type: IMAP Mail server Server Name: imap.gmail.com Username: [email protected] Port: 993 Default: 993 Connection Security: SSL/TLS Authentication method: Encrypted password Outgoing server (SMTP) Server Name: smtp.gmail.com Port: 587 Default: 25 Connection Security: STARTTLS Authentication method: Encrypted password Username: [email protected] IMAP is enabled in my Gmail settings. ERROR: Connection to the server [email protected] timed out. I am behind a proxy server and I have configured those settings under: Thunderbird Preferences - Advanced - Network and Disk Space - Connection Settings - Manual Proxy Configuration The proxy configuration works, as when I created a Blogs and News feeds a/c, it was working properly and fetching the feeds for me. So, Thunderbird is configured properly as per the proxy settings. Help me.

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• Apache2 Segmentation fault with wsgi_module

  - by a coder

  Apache 2.2.3 is running as an existing web server under RHEL 5. Attempting to set up Trac using wsgi_module. RHEL 5 ships with python 2.4, so in order to use the current version of Trac (1.0) I needed to install it with easy_install-2.6. Trac works with the default mod_python, however users strongly encourage not using this module as it is officially dead. Using RHEL's package manager, I downloaded/installed python26-mod_wsgi.so. I backed up the httpd.conf, then made the following additions: LoadModule wsgi_module modules/python26-mod_wsgi.so #...# WSGIScriptAlias /trac /www/virtualhosts/trac/deploy/cgi-bin/trac.wsgi <Directory /www/virtualhosts/trac/deploy/cgi-bin> WSGIApplicationGroup %{GLOBAL} Order deny,allow Allow from all </Directory> Next I moved trac.conf to trac.conf.bak (contains mod_python calls). I tested the configuration using: apachectl configtest Syntax is OK. So I reloaded the server config using: service httpd reload At this time, all virtualhosted sites stopped responding. I restored my backup copy of httpd.conf, reloaded the server config, and the virtualhosted sites are being served again. A quick look at the httpd error_log shows: [Mon Oct 08 10:20:04 2012] [info] mod_wsgi (pid=28282): Initializing Python. [Mon Oct 08 10:20:04 2012] [info] mod_wsgi (pid=28280): Attach interpreter ''. [Mon Oct 08 10:20:04 2012] [debug] proxy_util.c(1817): proxy: grabbed scoreboard slot 0 in child 28283 for worker proxy:reverse [Mon Oct 08 10:20:04 2012] [debug] proxy_util.c(1836): proxy: worker proxy:reverse already initialized [Mon Oct 08 10:20:04 2012] [debug] proxy_util.c(1930): proxy: initialized single connection worker 0 in child 28283 for (*) [Mon Oct 08 10:20:04 2012] [info] mod_wsgi (pid=28283): Initializing Python. [Mon Oct 08 10:20:04 2012] [notice] child pid 28249 exit signal Segmentation fault (11) [Mon Oct 08 10:20:04 2012] [notice] child pid 28250 exit signal Segmentation fault (11) [Mon Oct 08 10:20:04 2012] [notice] child pid 28251 exit signal Segmentation fault (11) There are many similar lines, this is just a snip of the log file. Suggestions on what could be going on to cause the Segmentation faults?

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• configs for several sites in apache with ssl

  - by elCapitano

  i need to secure two different sites in apache. One of them should only be a proxy for a different server which is running on port 8069. Now one (which is natively included in apache) runs with SSL: <VirtualHost *:443> ServerName 192.168.1.20 SSLEngine on SSLCertificateFile /etc/ssl/erp/oeserver.crt SSLCertificateKeyFile /etc/ssl/erp/oeserver.key DocumentRoot /var/www/cloud ServerPath /cloud/ #CustomLog /var/www/logs/ssl-access_log combined #ErrorLog /var/www/logs/ssl-error_log </VirtualHost> The other one is not running and even not registered. When i try to access it, i get an exception (ssl_error_rx_record_too_long): <VirtualHost *:443> ServerName 192.168.1.20 ServerPath /erp/ SSLEngine on SSLCertificateFile /etc/ssl/erp/oeserver.crt SSLCertificateKeyFile /etc/ssl/erp/oeserver.key ProxyRequests Off ProxyPreserveHost On <Proxy *> Order deny,allow Allow from all </Proxy> ProxyVia On ProxyPass / http://127.0.0.1:8069/ ProxyPassReverse / http://127.0.0.1:8069 RewriteEngine on RewriteRule ^/(.*) http://127.0.0.1:8069/$1 [P] RequestHeader set "X-Forwarded-Proto" "https" SetEnv proxy-nokeepalive 1 </VirtualHost> My whish is the following configuration: 192.168.1.20 ->> unsecured local path to website 192.168.1.20/cloud/ ->> secured local documentpath from cloud 192.168.1.20/erp/ ->> secured proxy on port 80 for http://192.168.1.20:8069 how is this possible? is this even possible? perhaps cloud.192.168.1.20 and erp.192.168.1.20 is better?! Thank you

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• error while adding web service to server in website panel

  - by sam

  I got following error while creating website for user in website panel.I am not able to create any hosting space in server's hosting plan it is showing 0 mb space. Stack Trace: [SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.UriFormatException: Invalid URI: The Authority/Host could not be parsed. at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind) at System.Uri..ctor(String uriString) at Microsoft.Web.Services3.WebServicesClientProtocol.set_Url(String value) at WebsitePanel.Server.Client.ServerProxyConfigurator.Configure(WebServicesClientProtocol proxy) at WebsitePanel.EnterpriseServer.ServiceProviderProxy.ServerInit(WebServicesClientProtocol proxy, ServerProxyConfigurator cnfg, String serverUrl, String serverPassword) at WebsitePanel.EnterpriseServer.ServiceProviderProxy.ServerInit(WebServicesClientProtocol proxy, ServerProxyConfigurator cnfg, Int32 serverId) at WebsitePanel.EnterpriseServer.ServiceProviderProxy.Init(WebServicesClientProtocol proxy, Int32 serviceId) at WebsitePanel.EnterpriseServer.WebAppGalleryController.InitFeedsByServiceId(Int32 UserId, Int32 serviceId) at WebsitePanel.EnterpriseServer.esWebApplicationGallery.GetGalleryApplicationsByServiceId(Int32 serviceId) --- End of inner exception stack trace ---] System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +1485877 System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +221 WebsitePanel.EnterpriseServer.esWebApplicationGallery.GetGalleryApplicationsByServiceId(Int32 serviceId) +68 WebsitePanel.Portal.WebAppGalleryHelpers.GetGalleryApplicationsByServiceId(Int32 serviceId) +31 can anybody help me in this.

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• How can I replace only the last occurence of an number in a string with php?

  - by Shawn

  How would you change this: a-10-b-19-c into something like this: a-10-b-20-c using regular expressions in PHP? The only solution I've found so far is: reverse the original string - "c-91-b-01-a" find the first number - "91" reverse it - "19" turn in into a number (parseInt) - 19 add 1 to it (+1) - 20 turn it into a string again (toString) - "20" reverse it again - "02" replace the original match with this new number - "c-02-b-01-a" reverse the string - "a-10-b-20-c" I was hoping someone on SO would have a simpler way to do this... Anyone?

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• IIS cannot access itself

  - by dave

  We are on a corporate network that uses ISA and I am having issues trying to not have requests go through ISA. I have IIS7 on my local Windows 7 machine that has websites and a service layer. The websites access the service layer using a xxxx.servicelayer.local address that is set up in my HOSTS file to point to 127.0.0.1. I have Windows Firewall client which I have disabled. I have tried both adding this address into IE so that it does not go through ISA and also disabled this section altogether. When the website (which is actually IIS making the request to itself) tries to access the service layer I receive an ISA error that proxy authentication has failed. Considering that everything I can see to configure is set to not go through the proxy, ISA, I cannot see how this is actually going through the proxy and giving this error. Is there something within Windows 7 that forces the proxy setting, some sort of caching or similar?

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• Can I build a VPN on top of Tor?

  - by Thilo

  If I understand correctly, the Tor client works as a combination of a proxy server and application plugins (such as the Firefox Torbutton) that enable use of the proxy and contain additional application-specific privacy features (such as suppressing cookies, sandboxing JavaScript, turning off Flash). That works very well with applications that support it (such as Firefox). But is there a way to establish a VPN over Tor, so that my whole Wifi network can be protected, including applications that do not support proxy configuration and devices like iPod touches?

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• configuring mod_proxy_html properly?

  - by tobinjim

  I have an apache2 web server that handles reverse proxy for Rails3 app running on another machine. The setup works except URLs generated within the webapp aren't getting rewritten by my configuration for mod_proxy_html. The ["Reverse Proxy Scenario"][1] is exactly what I'm trying to do, so I've followed the tutorial as completely as I know how. I've applied or tried answers supplied here on stackoverflow, to no effect. According to the "Reverse Proxy Scenario" you want a number of modules loaded. All those instructions are in my httpd.conf file and when I examine the output from apactectl -t -D DUMP_MODULES all the expected modules show in amongst the listing. My external web server doing the reverse proxy is at www.ourdomain.org and the Rails app is internally available at apphost.local (the server is Mac OS X Server 10.6, the rails app server is Mac OS X 10.6). What's working right now is access to the webapp via the reverse proxy as: http://www.ourdomain.org/apphost/railsappname/controllername/action But none of the javascript files, css files or other assets get loaded, and links internal to the web app come out missing the apphost portion of the URL, as if my rewrite rule is configured incorrectly (so of course I've focused on that and can't seem to get anything to be added or deleted in the process of passing the html in from the apphost and out through the Apache server). For instance, hovering over an action link in the html returned by the web app you'll get: http://www.ourdomain.org/railsappname/controllername/action Here's what my Apache directives look like: LoadModule proxy_html_module /usr/libexec/apache2/mod_proxy_html.so LoadModule xml2enc_module /usr/libexec/apache2/mod_xml2enc.so ProxyHTMLLogVerbose On LogLevel Debug ProxyPass /apphost/ http://apphost.local/ <Location /apphost/> SetOutputFilter INFLATE;proxy-html;DEFLATE ProxyPassReverse / ProxyHTMLExtended On ProxyHTMLURLMap railsappname/ apphost/railsappname/ RequestHeader unset Accept-Encoding </Location> After every change I make to httpd.conf I religiously check apachectl -t just to be sane. I'm definitely not an Apache expert, but all the directives that follow mine seem to not overrule what I'm doing here. But then nothing that I try seems to alter the URLs I see in my browser after hitting the Apache server with a request for my web app. Even if you can't tell what I've done incorrectly, I'd welcome ideas on how to get Apache to help see what it's working on and doing to the html coming from my web app. That's what I understood the ProxyHTMLLogVerbose On and LogLevel Debug to be setting up, but I'm not seeing anything in the log files.

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• Help me upgrade my pf.conf for OpenBSD 4.7

  - by polemon

  I'm planning on upgrading my OpenBSD to 4.7 (from 4.6) and as you may or may not know, they changed the syntax for pf.conf. This is the relevant portion from the upgrade guide: pf(4) NAT syntax change As described in more detail in this mailing list post, PF's separate nat/rdr/binat (translation) rules have been replaced with actions on regular match/filter rules. Simple rulesets may be converted like this: nat on $ext_if from 10/8 -> ($ext_if) rdr on $ext_if to ($ext_if) -> 1.2.3.4 becomes match out on $ext_if from 10/8 nat-to ($ext_if) match in on $ext_if to ($ext_if) rdr-to 1.2.3.4 and... binat on $ext_if from $web_serv_int to any -> $web_serv_ext becomes match on $ext_if from $web_serv_int to any binat-to $web_serv_ext nat-anchor and/or rdr-anchor lines, e.g. for relayd(8), ftp-proxy(8) and tftp-proxy(8), are no longer used and should be removed from pf.conf(5), leaving only the anchor lines. Translation rules relating to these and spamd(8) will need to be adjusted as appropriate. N.B.: Previously, translation rules had "stop at first match" behaviour, with binat being evaluated first, followed by nat/rdr depending on direction of the packet. Now the filter rules are subject to the usual "last match" behaviour, so care must be taken with rule ordering when converting. pf(4) route-to/reply-to syntax change The route-to, reply-to, dup-to and fastroute options in pf.conf move to filteropts; pass in on $ext_if route-to (em1 192.168.1.1) from 10.1.1.1 pass in on $ext_if reply-to (em1 192.168.1.1) to 10.1.1.1 becomes pass in on $ext_if from 10.1.1.1 route-to (em1 192.168.1.1) pass in on $ext_if to 10.1.1.1 reply-to (em1 192.168.1.1) Now, this is my current pf.conf: # $OpenBSD: pf.conf,v 1.38 2009/02/23 01:18:36 deraadt Exp $ # # See pf.conf(5) for syntax and examples; this sample ruleset uses # require-order to permit mixing of NAT/RDR and filter rules. # Remember to set net.inet.ip.forwarding=1 and/or net.inet6.ip6.forwarding=1 # in /etc/sysctl.conf if packets are to be forwarded between interfaces. ext_if="pppoe0" int_if="nfe0" int_net="192.168.0.0/24" polemon="192.168.0.10" poletopw="192.168.0.12" segatop="192.168.0.20" table <leechers> persist set loginterface $ext_if set skip on lo match on $ext_if all scrub (no-df max-mss 1440) altq on $ext_if priq bandwidth 950Kb queue {q_pri, q_hi, q_std, q_low} queue q_pri priority 15 queue q_hi priority 10 queue q_std priority 7 priq(default) queue q_low priority 0 nat-anchor "ftp-proxy/*" rdr-anchor "ftp-proxy/*" nat on $ext_if from !($ext_if) -> ($ext_if) rdr pass on $int_if proto tcp to port ftp -> 127.0.0.1 port 8021 rdr pass on $ext_if proto tcp to port 2080 -> $segatop port 80 rdr pass on $ext_if proto tcp to port 2022 -> $segatop port 22 rdr pass on $ext_if proto tcp to port 4000 -> $polemon port 4000 rdr pass on $ext_if proto tcp to port 6600 -> $polemon port 6600 anchor "ftp-proxy/*" block pass on $int_if queue(q_hi, q_pri) pass out on $ext_if queue(q_std, q_pri) pass out on $ext_if proto icmp queue q_pri pass out on $ext_if proto {tcp, udp} to any port ssh queue(q_hi, q_pri) pass out on $ext_if proto {tcp, udp} to any port http queue(q_std, q_pri) #pass out on $ext_if proto {tcp, udp} all queue(q_low, q_hi) pass out on $ext_if proto {tcp, udp} from <leechers> queue(q_low, q_std) pass in on $ext_if proto tcp to ($ext_if) port ident queue(q_hi, q_pri) pass in on $ext_if proto tcp to ($ext_if) port ssh queue(q_hi, q_pri) pass in on $ext_if proto tcp to ($ext_if) port http queue(q_hi, q_pri) pass in on $ext_if inet proto icmp all icmp-type echoreq queue q_pri If someone has experience with porting the 4.6 pf.conf to 4.7, please help me do the correct changes. OK, this is how far I've got: I commented out nat-anchor and rdr-anchor, as describted in the guide: #nat-anchor "ftp-proxy/*" #rdr-anchor "ftp-proxy/*" And this is how I've "converted" the rdr rules: #nat on $ext_if from !($ext_if) -> ($ext_if) match out on $ext_if from !($ext_if) nat-to ($ext_if) #rdr pass on $int_if proto tcp to port ftp -> 127.0.0.1 port 8021 match in on $int_if proto tcp to port ftp rdr-to 127.0.0.1 port 8021 #rdr pass on $ext_if proto tcp to port 2080 -> $segatop port 80 match in on $ext_if proto tcp tp port 2080 rdr-to $segatop port 80 #rdr pass on $ext_if proto tcp to port 2022 -> $segatop port 22 match in on $ext_if proto tcp tp port 2022 rdr-to $segatop port 22 rdr pass on $ext_if proto tcp to port 4000 -> $polemon port 4000 match in on $ext_if proto tcp tp port 4000 rdr-to $polemon port 4000 rdr pass on $ext_if proto tcp to port 6600 -> $polemon port 6600 match in on $ext_if proto tcp tp port 6600 rdr-to $polemon port 6600 Did I miss anything? Is the anchor for ftp-proxy OK as it is now? Do I need to change something in the other pass in on... lines?

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• Looking for a solid redirection infrastructre

  - by isoman

  We have critical servers (webservers and databases) that are fully replicated, except for the reverse proxy that we use to hide the internal stuff. This proxy is acting like a router that filters and redirects traffic to the main server and switch for failover if the main one is down. We want to find an alternative to this proxy because one single entry point is not enough. Is there any company that has a solid and redundant infrastructure that offers redirection to an IP and allows quick switching to another one?

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• How to differentiate between exceptions i can show the user, and ones i can't?

  - by Ian Boyd

  i have some business logic that traps some logically invalid situations, e.g. trying to reverse a transaction that was already reversed. In this case the correct action is to inform the user: Transaction already reversed or Cannot reverse a reversing transaction or You do not have permission to reverse transactions or This transaction is on a session that has already been closed or This transaction is too old to be reversed The question is, how do i communicate these exceptional cases back to the calling code, so they can show the user? Do i create a separate exception for each case: catch (ETransactionAlreadyReversedException) MessageBox.Show('Transaction already reversed') catch (EReversingAReversingTransactionException) MessageBox.Show('Cannot reverse a reversing transaction') catch (ENoPermissionToReverseTranasctionException) MessageBox.Show('You do not have permission to reverse transactions') catch (ECannotReverseTransactionOnAlredyClosedSessionException) MessageBox.Show('This transaction is on a session that has already been closed') catch (ECannotReverseTooOldTransactionException) MessageBox.Show('This transaction is too old to be reversed') Downside for this is that when there's a new logical case to show the user: Tranasctions created by NSL cannot be reversed i don't simply show the user a message, and instead it leaks out as an unhandled excpetion, when really it should be handled with another MessageBox. The alternative is to create a single exception class: `EReverseTransactionException` With the understanding that any exception of this type is a logical check, that should be handled with a message box: catch (EReverseTransactionException) But it's still understood that any other exceptions, ones that involve, for example, an memory ECC parity error, continue unhandled. In other words, i don't convert all errors that can be thrown by the ReverseTransaction() method into EReverseTransactionException, only ones that are logically invalid cause of the user.

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• Objective C "do - while" question

  - by Rob

  The example for one of the exercises in the book I am reading shows the following code: #import <Foundation/Foundation.h> int main (int argc, const char * argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int input, reverse, numberOfDigits; reverse = 0; numberOfDigits = 0; NSLog (@"Please input a multi-digit number:"); scanf ("%i", &input); if ( input < 0 ) { input = -input; NSLog (@"Minus"); } do { reverse = reverse * 10 + input % 10; numberOfDigits++; } while (input /= 10); do { switch ( reverse % 10 ) { case 0: NSLog (@"Zero"); break; case 1: NSLog (@"One"); break; case 2: NSLog (@"Two"); break; case 3: NSLog (@"Three"); break; case 4: NSLog (@"Four"); break; case 5: NSLog (@"Five"); break; case 6: NSLog (@"Six"); break; case 7: NSLog (@"Seven"); break; case 8: NSLog (@"Eight"); break; case 9: NSLog (@"Nine"); break; } numberOfDigits--; } while (reverse /= 10); while (numberOfDigits--) { NSLog (@"Zero"); } [pool drain]; return 0; } My question is this, the while statement shows (input /= 10) which, if I understand this correctly basically means (input = input / 10). Now, if that is true, why doesn't the loop just run continuously? I mean, even if you were to divide 0 by 10 then that would still extract a number. If the user was to input "50607", it would first cut off the "7", then the "0", and so on and so on, but why does it exit the loop after removing the "5". Wouldn't the response after the "5" be the same as the "0" between the 5 and the 6 to the program?

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• The unary increment operator in pointer arithmetic

  - by RhymesWithDuck

  Hello, this is my first post. I have this function for reversing a string in C that I found. void reverse(char* c) { if (*c != 0) { reverse(c + 1); } printf("%c",*c); } It works fine but if I replace: reverse(c + 1); with: reverse(++c); the first character of the original string is truncated. My question is why would are the statements not equivalent in this instance? Thanks

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• Create a certificate file

  - by saeed hardan

  I have a proxy that I want to test. The proxy generates a private key and a certificate like here . I have tried to copy the content as in the link in a file and name it x.CER , then clicked on it and i got the message : This file is invalid for use as the following : Security Certificate how can i install them on windows ? note: I have set in internet options that all the traffic goes throw the proxy

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