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• Kerberos & signle-sign-on for website

  - by Dylan Klomparens

  I have a website running on a Linux computer using Apache. I've employed mod_auth_kerb for single-sign-on Kerberos authentication against a Windows Active Directory server. In order for Kerberos to work correctly, I've created a service account in Active Directory called dummy. I've generated a keytab for the Linux web server using ktpass.exe on the Windows AD server using this command: ktpass /out C:\krb5.keytab /princ HTTP/[email protected].COM /mapuser [email protected].COM /crypto RC4-HMAC-NT /ptype KRB5_NT_PRINCIPAL /pass xxxxxxxxx I can successfully get a ticket from the Linux web server using this command: kinit -k -t /path/to/keytab HTTP/[email protected].COM ... and view the ticket with klist. I have also configured my web server with these Kerberos properties: <Directory /> AuthType Kerberos AuthName "Example.com Kerberos domain" KrbMethodK5Passwd Off KrbAuthRealms EXAMPLE.COM KrbServiceName HTTP/[email protected].COM Krb5KeyTab /path/to/keytab Require valid-user SSLRequireSSL <Files wsgi.py> Order deny,allow Allow from all </Files> </Directory> However, when I attempt to log in to the website (from another Desktop with username 'Jeff') my Kerberos credentials are not automatically accepted by the web server. It should grant me access immediately after that, but it does not. The only information I get from the mod_auth_kerb logs is: kerb_authenticate_user entered with user (NULL) and auth_type Kerberos However, more information is revealed when I change the mod_auth_kerb setting KrbMethodK5Passwd to On: [Fri Oct 18 17:26:44 2013] [debug] src/mod_auth_kerb.c(1939): [client xxx.xxx.xxx.xxx] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos [Fri Oct 18 17:26:44 2013] [debug] src/mod_auth_kerb.c(1031): [client xxx.xxx.xxx.xxx] Using HTTP/[email protected].COM as server principal for password verification [Fri Oct 18 17:26:44 2013] [debug] src/mod_auth_kerb.c(735): [client xxx.xxx.xxx.xxx] Trying to get TGT for user [email protected].COM [Fri Oct 18 17:26:44 2013] [debug] src/mod_auth_kerb.c(645): [client xxx.xxx.xxx.xxx] Trying to verify authenticity of KDC using principal HTTP/[email protected].COM [Fri Oct 18 17:26:44 2013] [debug] src/mod_auth_kerb.c(1110): [client xxx.xxx.xxx.xxx] kerb_authenticate_user_krb5pwd ret=0 [email protected].COM authtype=Basic What am I missing? I've studied a lot of online tutorials and cannot find a reason why the Kerberos credentials are not allowing access.

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• Huge performance difference between two web servers, odd behavior seen using process monitor

  - by Francis Gagnon

  We have two Coldfusion servers that have a huge performance difference running the exact same code on the exact same input data. The code in questions instantiates a large amount of CFCs (Coldfusion Components, which are similar to objects in OOP languages). I compared the two servers by running Process Monitor and then calling the problematic code on both machines. I learned two things. First, Coldfusion opens CFC files every time it instantiates an object. Both servers do this, so it cannot be the cause of the performance difference. Second, the fast server opens the CFC files directly while the server with the performance problem seems to navigate its way through the path until it reaches the desired CFC file. It does this for every file, even the ones it has previously loaded, and because the code instantiates so many CFCs it becomes very slow. See below the partial Promon traces that show this behavior. It can take over 60 seconds for the slow server to do what the fast one does in 2 seconds. Can anyone tell me what causes this behavior? Is it a Coldfusion setting? Since Coldfusion runs on top of Java, is it a Java setting? Is it an OS option? The fast server is running Windows XP and I think the slow server is a Windows Server 2003. Bonus question: Coldfusion doesn't seem to perform any READ FILE operations on any of the CFC or CFM files. How can this be? Sample of the fast server opening CFC files: 11:25:14.5588975 jrun.exe QueryOpen C:\CF\wwwroot\APP\com\HtmlUtils.cfc 11:25:14.5592758 jrun.exe CreateFile C:\CF\wwwroot\APP\com\HtmlUtils.cfc 11:25:14.5595024 jrun.exe QueryBasicInformationFile C:\CF\wwwroot\APP\com\HtmlUtils.cfc 11:25:14.5595940 jrun.exe CloseFile C:\CF\wwwroot\APP\com\HtmlUtils.cfc 11:25:14.5599628 jrun.exe CreateFile C:\CF\wwwroot\APP\com\HtmlUtils.cfc 11:25:14.5601600 jrun.exe QueryBasicInformationFile C:\CF\wwwroot\APP\com\HtmlUtils.cfc 11:25:14.5602463 jrun.exe CloseFile C:\CF\wwwroot\APP\com\HtmlUtils.cfc Equivalent sample of the slow server opening CFC files: 11:15:08.1249230 jrun.exe CreateFile D:\ 11:15:08.1250100 jrun.exe QueryDirectory D:\org 11:15:08.1252852 jrun.exe CloseFile D:\ 11:15:08.1259670 jrun.exe CreateFile D:\org 11:15:08.1260319 jrun.exe QueryDirectory D:\org\cli 11:15:08.1260769 jrun.exe CloseFile D:\org 11:15:08.1269451 jrun.exe CreateFile D:\org\cli 11:15:08.1270613 jrun.exe QueryDirectory D:\org\cli\cpn 11:15:08.1271140 jrun.exe CloseFile D:\org\cli 11:15:08.1279312 jrun.exe CreateFile D:\org\cli\cpn 11:15:08.1280086 jrun.exe QueryDirectory D:\org\cli\cpn\APP 11:15:08.1280789 jrun.exe CloseFile D:\org\cli\cpn 11:15:08.1291034 jrun.exe CreateFile D:\org\cli\cpn\APP 11:15:08.1291709 jrun.exe QueryDirectory D:\org\cli\cpn\APP\com 11:15:08.1292224 jrun.exe CloseFile D:\org\cli\cpn\APP 11:15:08.1300568 jrun.exe CreateFile D:\org\cli\cpn\APP\com 11:15:08.1301321 jrun.exe QueryDirectory D:\org\cli\cpn\APP\com\HtmlUtils.cfc 11:15:08.1301843 jrun.exe CloseFile D:\org\cli\cpn\APP\com 11:15:08.1312049 jrun.exe CreateFile D:\org\cli\cpn\APP\com\HtmlUtils.cfc 11:15:08.1314409 jrun.exe QueryBasicInformationFile D:\org\cli\cpn\APP\com\HtmlUtils.cfc 11:15:08.1314633 jrun.exe CloseFile D:\org\cli\cpn\APP\com\HtmlUtils.cfc 11:15:08.1315881 jrun.exe CreateFile D:\ 11:15:08.1316379 jrun.exe QueryDirectory D:\org 11:15:08.1316926 jrun.exe CloseFile D:\ 11:15:08.1330951 jrun.exe CreateFile D:\org 11:15:08.1338656 jrun.exe QueryDirectory D:\org\cli 11:15:08.1339118 jrun.exe CloseFile D:\org 11:15:08.1526468 jrun.exe CreateFile D:\org\cli 11:15:08.1527295 jrun.exe QueryDirectory D:\org\cli\cpn 11:15:08.1527989 jrun.exe CloseFile D:\org\cli 11:15:08.1531977 jrun.exe CreateFile D:\org\cli\cpn 11:15:08.1532589 jrun.exe QueryDirectory D:\org\cli\cpn\APP 11:15:08.1533575 jrun.exe CloseFile D:\org\cli\cpn 11:15:08.1538457 jrun.exe CreateFile D:\org\cli\cpn\APP 11:15:08.1539083 jrun.exe QueryDirectory D:\org\cli\cpn\APP\com 11:15:08.1539553 jrun.exe CloseFile D:\org\cli\cpn\APP 11:15:08.1544126 jrun.exe CreateFile D:\org\cli\cpn\APP\com 11:15:08.1544980 jrun.exe QueryDirectory D:\org\cli\cpn\APP\com\HtmlUtils.cfc 11:15:08.1545482 jrun.exe CloseFile D:\org\cli\cpn\APP\com 11:15:08.1551034 jrun.exe CreateFile D:\org\cli\cpn\APP\com\HtmlUtils.cfc 11:15:08.1552878 jrun.exe QueryBasicInformationFile D:\org\cli\cpn\APP\com\HtmlUtils.cfc 11:15:08.1553044 jrun.exe CloseFile D:\org\cli\cpn\APP\com\HtmlUtils.cfc Thanks

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• 301 redirect Rule For Load Balance F5 BigIp

  - by Kshah

  I have a load balancer F5 Big ip for my website. Currently, I am having 302 redirect in place; however, I wanted to apply 301 but dont know how. For example: My website (abc.com) when typed 302 redirects to abc.com/index and when typed www.abc.com 302 redirects www.abc.com/index. I wanted to have a rule which will help me in abc.com - 301 redirect - www.abc.com/index abc.com/index - 301 redirect - www.abc.com/index www.abc.com - 301 redirect - www.abc.com/index Below is the code that my tech person is trying: Redirect to WWW when HTTP_REQUEST { if { [HTTP::host] equals "abc.com" or [HTTP::host] equals "abc.co.in" or [HTTP::host] equals "www.abc.co.in" } { if {!( [HTTP::path] equals "/")} { HTTP::respond 301 Location "http://www.abc.com[HTTP::path]" } } } Redirect POST when HTTP_REQUEST { if { [HTTP::method] equals "POST" } { persist source_addr pool shop_shop_vr4_http } } Redirect-VR4 HOMEPAGE when HTTP_REQUEST { if { [HTTP::path] equals "/" or [HTTP::path] starts_with "/target/" or [HTTP::path] starts_with "/logs/" or [HTTP::path] starts_with "/config/" } { HTTP::redirect "http://[HTTP::host]/index.jsp.vr" } }

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• HA for Resque & Redis

  - by Chris Go

  Trying to avoid SPOFs for Resque and Redis. Ultimately the client is going to be PHP via (https://github.com/chrisboulton/php-resque). After going through and finding some workable HA for nginx+php-fpm and MySQL (mysql master-master setup as a way to simply master-slave promotion), next up is Resque+Redis. Standard install of Resque uses localhost Redis (at DigitalOcean). I am heavily depending on Amazon Route 53 DNS failover to try to solve this. resque1.domain.com points to localhost redis (redis1.domain.com) = same server resque2.domain.com points to localhost redis (redis2.domain.com) = same server Do resque.domain.com with FAILOVER resque1 as primary and resque2 as secondary. What this means is that most of the time (99%), resque1 should be getting hit with resque2 as just a hot backup. This lets me just have to get 2 servers and makes sure that any hits to resque.domain.com goes somewhere The other way to do this is to break out resque and redis into 4 servers and do it as follows resque1.domain.com - redis.domain.com resque2.domain.com - redis.domain.com redis1.domain.com redis2.domain.com Then setup DNS Failover resque.domain.com - primary: resque1 and secondary: resque2 redis.domain.com - primary: redis1 and secondary: redis2 I'd like to get away for 2 servers if I can but is this 2nd setup much better or negligible? Thanks, Chris

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• Sign multiple domains with single Domain Key (dk-filter)

  - by Lashae

  Motivation The private shopping website GILT, send periodical update emails from giltgroupe.bounce.ed10.net however all of the mails are signed with domain keys of giltgroupe.com. mailed-by giltgroupe.bounce.ed10.net signed-by giltgroupe.com My Story I couldn't manage to sign x.com with y.com 's domain key using dk-filter under Debian Lenny with postfix. If I try to init dk-filter service with following arguments: DAEMON_OPTS="$DAEMON_OPTS -d x.com,y.com -c nofws -k -i /var/dk-filter/internal_hosts -s /etc/dk-keys.conf" dk-filter service signs with domain x.com (d=x.com) If I change the daemon arg.s as following: DAEMON_OPTS="$DAEMON_OPTS -d x.com -c nofws -k -i /var/dk-filter/internal_hosts -s /etc/dk-keys.conf" then emails sent From y.com is not being signed. the dk-keys.conf file is as follows: *:/var/dk-filter/y.com/mail I managed to do same thing with DKIM, works perfect. However DK doesn't seem to work. I don't have any problem signing y.com's emails with y.com's key and x.com's emails x.com's key, which indicates there is no configuration problem. Do you have any experience/advice to make it possible to sign emails from multiple domains by a specific chosen domain?

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• .htaccess - redirect non www to www and retain subdomains from redirecting

  - by RhymeGuy

  So, on my main domain 'domain.com' I created several subdomains from cPanel, like 'sub1.domain.com' and 'sub2.domain.com'. Their real location on server is in 'domain.com/sub1' and 'domain.com/sub2'. Now, I want to redirect non www to www with .htaccess and this is what currently what i have: <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteCond %{HTTP_HOST} !^www\.domain\.com [NC] RewriteRule ^(.*) http://www.domain.com/$1 [L,R=301] </IfModule> This works. When somebody enter domain.com it will be redirected to www.domain.com. However when somebody enter sub1.domain.com, he will be redirected to www.domain.com/sub1 - which I don't want, it needs to be in sub1.domain.com. What shall I add in .htaccess file to accomplish this?

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• haproxy: Is there a way to group acls for greater efficiency?

  - by user41356

  I have some logic in a frontend that routes to different backends based on both the host and the url. Logically it looks like this: if hdr(host) ends with 'a.domain.com': if url starts with '/dir1/': use backend domain.com/dir1/ elif url starts with '/dir2/': use backend domain.com/dir2/ # ... else if ladder repeats on different dirs elif hdr(host) ends with 'b.domain.com': # another else if ladder exactly the same as above # ... # ... else if ladder repeats like this on different domains Is there a way to group acls to avoid having to repeatedly check the domain acl? Obviously there needs to be a use backend statement for each possibility, but I don't want to have to check the domain over and over because it's very inefficient. In other words, I want to avoid this: use backend domain.com/url1/ if acl-domain.com and acl-url1 use backend domain.com/url2/ if acl-domain.com and acl-url2 use backend domain.com/url3/ if acl-domain.com and acl-url3 # tons more possibilities below because it has to keep checking acl-domain.com. This is particularly an issue because I have specific rules for subdomains such as a.domain.com and b.domain.com, but I want to fall back on the most common case of *.domain.com. That means every single rule that uses a specific subdomain must be checked prior to *.domain.com which makes it even more inefficient for the common case.

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• Rewriting URLs from subdomain to domain in Apache

  - by Nazgulled

  Hi, My webserver is running Plesk and part of my site structure goes like this: / /httpdocs (domain root folder, URL: http://www.domain.com) /subdomains /subdomains/blog/httpdocs (blog root folder, URL: http://blog.domain.com) I have a WordPress installation in the domain root folder and WP is configured to display a static page when accessing www.domain.com and to display the blog when accessing www.domain.com/blog. However, I want to redirect (using mod_rewrite) all requests from http://blog.domain.com/ to http://www.domain.com/blog/. A few examples: Accessing http://blog.domain.com/archives should access http://www.domain.com/blog/archives/ Accessing http://blog.domain.com/tag/abc should access http://www.domain.com/blog/tag/abc/ Accessing http://blog.domain.com/some-post-title should access http://www.domain.com/blog/some-post-title All this should be transparent to the user, the address shouldn't be changed on the browser's address bar. In better words, I want a URL rewrite and not a URL redirect. Is this achievable with mod_rewrite? Can anyone help me with the .htaccess? All my attempts on doing so have failed...

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• Squirrelmail receiving duplicate emails

  - by Austin

  A client of mine is experiencing issues with his email, it appears that whenever he receives email from a certain domain it comes as duplicates. Not only are they duplicates but the duplicated items have a (+) sign next to them which usually indicates an attachment. Could this be because of a forwarding issue? Here are the headers: Return-Path: <[email protected]> Received: from bigcat.centralmasswebdesign.com (root@localhost) by tarbellconstruction.com (8.13.1/8.13.1) with ESMTP id o4OFnO23003379 for <[email protected]>; Mon, 24 May 2010 11:49:24 -0400 X-ClientAddr: 72.249.26.200 Received: from mf3.spamfiltering.com (mf3.spamfiltering.com [72.249.26.200]) by bigcat.centralmasswebdesign.com (8.13.1/8.13.1) with ESMTP id o4OFnOjF005520 for <[email protected]>; Mon, 24 May 2010 11:49:24 -0400 X-Envelope-From: MLeBlanc@NelcoWorldWide.com X-Envelope-To: kdt@tarbellconstruction.com Received: From 67-132-16-226.dia.static.qwest.net (67.132.16.226) by mf3.spamfiltering.com (MAILFOUNDRY) id 6lzIAmdLEd+oFQAw for [email protected]; Mon, 24 May 2010 15:49:23 -0000 (GMT) Received: from mail pickup service by WMA2-EXCH1.NELCO-USA.net with Microsoft SMTPSVC; Mon, 24 May 2010 11:49:18 -0400 Content-Transfer-Encoding: 7bit Importance: normal Priority: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4325 Content-Class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----_=_NextPart_001_01CAFB58.AAB268D0" Subject: weekly activity report for week ending May 22, 2010 Date: Mon, 24 May 2010 11:49:16 -0400 Message-ID: <15BCC4D99E8CBF48A2FA37A318CFF5C801209CCC@wma2-exch1.NELCO-USA.net> X-MS-Has-Attach: yes X-MS-TNEF-Correlator: Thread-Topic: weekly activity report for week ending May 22, 2010 thread-index: Acr7WKpdCelRCiocT1eBY2YN5Ma8DA== From: "Mike LeBlanc" <[email protected]> To: "Keith Berube" <[email protected]>, "Ken Tarbell" <[email protected]> X-OriginalArrivalTime: 24 May 2010 15:49:18.0361 (UTC) FILETIME=[AB546890:01CAFB58]

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• nginx config to serve as external secure proxy

  - by realworldcoder

  I'm setting up an external nginx server to proxy all outgoing traffic in order to simplify outbound firewall rules. What I'd like is: https://service1.com.example.com -- https://service1.com:443 https://www.service2.com.example.com -- https://www.service2.com:443 https://service3.com.example.com -- http://service3.com:8080 (everything else denied) (There will be 30-40 different hosts here, so I'm looking for something relatively easy to maintain.) Is this possible with Nginx? Or is there some other proxy software that is better suited for this problem?

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• Apache2 Doesn't Serve Subdomain Alias

  - by Cyle Hunter

  I'm trying to prefix an existing Rails application with a sub-domain, essentially I want the sub-domain to serve the same application. Right now apache2 serves my application with "www.example.com" or "example.com". I adjusted my sites-available virtualhost in hopes of allowing for "foo.example.com" or "www.foo.example.com" however both instances are met with a domain not found error. Here is my current VirtualHost in /etc/apache2/sites-available/example.com: <VirtualHost *:80> ServerName example.com ServerAlias foo.example.com *.example.com www.foo.example.com www.example.com DocumentRoot /home/user/my_app/public <Directory /home/user/my_app/public> AllowOverride all Options -MultiViews </Directory> </VirtualHost> Any ideas? Note, I realized I probably don't need a wild card sub-domain for what I'm trying to do, I simply added that in as a last-ditch effort. Edit: The actual domain is virtualrobotgames.com with the desired subdomain being roboteer.virtualrobotgames.com

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• DNS Problems (NIGHTMARES!) with BIND and Virtualmin

  - by Nyxynyx

  I have a webserver (Ubuntu 12.04 with LAMP) using Virtualmin / Webmin. Because I just moved from a Cpanel system, I am having a nightmare configuring the DNS! Using intoDNS.com, the failed reports are: Mismatched NS records WARNING: One or more of your nameservers did not return any of your NS records. DNS servers responded ERROR: One or more of your nameservers did not respond: The ones that did not respond are: 123.123.123.123 213.251.188.141x Multiple Nameservers ERROR: Looks like you have less than 2 nameservers. According to RFC2182 section 5 you must have at least 3 nameservers, and no more than 7. Having 2 nameservers is also ok by me. Missing nameservers reported by your nameserver You should already know that your NS records at your nameservers are missing, so here it is again: ns1.mydomain.com. sdns2.ovh.net. SOA record No valid SOA record came back! MX Records WWW A Record ERROR: I could not get any A records for www.mydomain.com! Step-by-Step of my Attempt In my domain registrar (Namecheap), I registered ns1.mydomain.com as a nameserver, pointing to the IP address of my web server which is running bind9. The domain is setup with DNS ns1.mydomain.com and sdns2.ovh.net. sdns2.ovh.net is a secondary DNS server (SLAVE and pointing mydomain.com to the IP address of my web server) Webserver domain: mydomain.com Webserver hostname: ns4000000.ip-123-123-123.net Webserver IP: 123.123.123.123 Under Virtualmin, I edited the default Virtual server template, BIND DNS records for new domains: ns1.mydomain.com Master DNS server hostname: ns1.mydomain.com Next I created a Virtual server using that server template. This is what I've done but its still not working! Any ideas? I've been stuck for days, thank you for all your help! service bind9 status * bind9 is running lsof -i :53 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME named 6966 bind 20u IPv6 338583 0t0 TCP *:domain (LISTEN) named 6966 bind 21u IPv4 338588 0t0 TCP localhost.localdomain:domain (LISTEN) named 6966 bind 22u IPv4 338590 0t0 TCP ns4000000.ip-123-123-123.net:domain (LISTEN) named 6966 bind 512u IPv6 338582 0t0 UDP *:domain named 6966 bind 513u IPv4 338587 0t0 UDP localhost.localdomain:domain named 6966 bind 514u IPv4 338589 0t0 UDP ns4000000.ip-123-123-123.net:domain /etc/resolv.con (Not sure how 213.186.33.99 got here) nameserver 127.0.0.1 nameserver 213.186.33.99 search ovh.net host 123.123.123.123 (my web server's IP) 13.60.245.198.in-addr.arpa domain name pointer ns4000000.ip-123-123-123.net. nslookup 213.186.33.99 Server: 127.0.0.1 Address: 127.0.0.1#53 Non-authoritative answer: 99.33.186.213.in-addr.arpa name = cdns.ovh.net. Authoritative answers can be found from: 33.186.213.in-addr.arpa nameserver = ns.ovh.net. 33.186.213.in-addr.arpa nameserver = dns.ovh.net. nslookup ns1.mydomain.com ;; Got SERVFAIL reply from 127.0.0.1, trying next server ;; connection timed out; no servers could be reached nslookup ns2.mydomain.com ;; Got SERVFAIL reply from 127.0.0.1, trying next server ;; connection timed out; no servers could be reached nslookup www.mydomain.com ;; Got SERVFAIL reply from 127.0.0.1, trying next server ;; connection timed out; no servers could be reached dig mydomain.com ; <<>> DiG 9.8.1-P1 <<>> mydomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 43540 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;mydomain.com. IN A ;; Query time: 0 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Thu Oct 11 11:30:09 2012 ;; MSG SIZE rcvd: 30 dig ns1.mydomain.com ; <<>> DiG 9.8.1-P1 <<>> ns1.mydomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 31254 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;ns1.mydomain.com. IN A ;; Query time: 0 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Thu Oct 11 11:30:16 2012 ;; MSG SIZE rcvd: 34 /etc/bind/named.conf include "/etc/bind/named.conf.options"; include "/etc/bind/named.conf.local"; include "/etc/bind/named.conf.default-zones"; /etc/bind/named.conf.default-zones zone "." { type hint; file "/etc/bind/db.root"; }; zone "localhost" { type master; file "/etc/bind/db.local"; }; zone "127.in-addr.arpa" { type master; file "/etc/bind/db.127"; }; zone "0.in-addr.arpa" { type master; file "/etc/bind/db.0"; }; zone "255.in-addr.arpa" { type master; file "/etc/bind/db.255"; }; /etc/bind/named.conf.local zone "mydomain.com" { type master; file "/var/lib/bind/mydomain.com.hosts"; allow-transfer { 127.0.0.1; localnets; }; }; /etc/bind/named.conf.options options { directory "/var/cache/bind"; dnssec-validation auto; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; // allow-recursion { 127.0.0.1; }; // transfer-source; }; named-checkconf -z dns_master_load: /var/lib/bind/mydomain.com.hosts:21: unexpected end of line dns_master_load: /var/lib/bind/mydomain.com.hosts:20: unexpected end of input /var/lib/bind/mydomain.com.hosts: file does not end with newline zone mydomain.com/IN: loading from master file /var/lib/bind/mydomain.com.hosts failed: unexpected end of input zone mydomain.com/IN: not loaded due to errors. _default/mydomain.com/IN: unexpected end of input zone localhost/IN: loaded serial 2 zone 127.in-addr.arpa/IN: loaded serial 1 zone 0.in-addr.arpa/IN: loaded serial 1 zone 255.in-addr.arpa/IN: loaded serial 1 iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:20000 ACCEPT tcp -- anywhere anywhere tcp dpt:webmin ACCEPT tcp -- anywhere anywhere tcp dpt:https ACCEPT tcp -- anywhere anywhere tcp dpt:http ACCEPT tcp -- anywhere anywhere tcp dpt:imaps ACCEPT tcp -- anywhere anywhere tcp dpt:imap2 ACCEPT tcp -- anywhere anywhere tcp dpt:pop3s ACCEPT tcp -- anywhere anywhere tcp dpt:pop3 ACCEPT tcp -- anywhere anywhere tcp dpt:ftp-data ACCEPT tcp -- anywhere anywhere tcp dpt:ftp ACCEPT tcp -- anywhere anywhere tcp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:submission ACCEPT tcp -- anywhere anywhere tcp dpt:smtp ACCEPT tcp -- anywhere anywhere tcp dpt:ssh ACCEPT all -- anywhere anywhere Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination

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• Email server can send internal, but messages never arrive at external recipients

  - by Chase Florell

  I'm running MailEnable on my server, and have been for many years. Recently we had an attack on our server, and I was able to close the hole. Since then, our mail server doesn't seem to be sending mail out. If I send an email from myself to another account hosted on the server, the email arrives as expected. If I send an email from my gmail account to my business account, the email also arrives as expected The problem comes when I send from my business account to an external domain I tried the following Gmail.com Hotmail.com Shaw.ca When I send to any of the above The message leaves my client as expected, The logs appear to accept and forward on the message The SMTP outbound que is empty The message never arrives I have checked our domain with mxtoolbox.com senderbase.org And neither of them are reporting any problems with our domain. I have ensured that port 25 is open (along with the other standard ports) Here is one of the log entries from the SMTP connector 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 220 mx1.example.com ESMTP MailEnable Service, Version: 6.81--6.81 ready at 11/05/13 12:10:00 0 0 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 EHLO EHLO ASSP.nospam 250-mx1.example.com [127.0.0.1], this server offers 6 extensions 159 18 11/05/13 12:10:00 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 EHLO EHLO ASSP.nospam 250-mx1.example.com [127.0.0.1], this server offers 6 extensions 159 18 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH AUTH LOGIN 334 VXNlcm5hbWU6 18 12 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH {blank} 334 UGFzc3dvcmQ6 18 26 chase@example.com 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 AUTH Y29sb25lbGZhY2U= 235 Authenticated 19 18 chase@example.com 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 MAIL MAIL FROM:<[email protected]> 250 Requested mail action okay, completed 43 31 chase@example.com 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 RCPT RCPT TO:<[email protected]> 250 Requested mail action okay, completed 43 35 chase@example.com 11/05/13 12:10:01 SMTP-IN 494C0AF55CD0400FB90FD5E6525BC885.MAI 1312 127.0.0.1 DATA DATA 354 Start mail input; end with <CRLF>.<CRLF> 46 6 chase@example.com Here are the headers of the sent message X-Assp-Version: 1.7.5.7(1.0.07) on ASSP.nospam X-Assp-ID: ASSP.nospam 78601-04523 X-Assp-Intended-For: chase@gmail.com X-Assp-Envelope-From: chase@example.com Received: from [10.10.1.101] ([68.147.245.149] helo=[10.10.1.101]) with IPv4:587 by ASSP.nospam; 5 Nov 2013 12:10:00 -0700 From: Chase Florell <[email protected]> Content-Type: text/plain Content-Transfer-Encoding: 7bit Subject: Test Message Message-Id: <[email protected]> Date: Tue, 5 Nov 2013 12:10:18 -0700 To: Chase Florell <[email protected]> Mime-Version: 1.0 (Mac OS X Mail 7.0 \(1816\)) X-Mailer: Apple Mail (2.1816) . Where else can I check to see if there is something broken? What could cause a problem like this whereby the message appears to send, but never arrives, and never returns a bounce?

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• SMTP for multiple domains on virtual interfaces

  - by Pawel Goscicki

  The setup is like this (Ubuntu 9.10): eth0: 1.1.1.1 name.isp.com eth0:0 2.2.2.2 example2.com eth0:1 3.3.3.3 example3.com example2.com and example3.com are web apps which need to send emails to their users. 2.2.2.2 points to example2.com and vice-versa (A/PTR). MX - Google. Google handles all incoming mail. 3.3.3.3 points to example3.com and vice-versa (A/PTR). MX - Google. Google handles all incoming mail. Requirements: Local delivery must be disabled (must deliver to MX specified server), so that the following works (note that there is no local user bob on the machine, but there is an existing bob email user): echo "Test" | mail -s "Test 6" bob@example2.com I need to be able to specify from which IP/domain name the email is delivered when sending an email. I fought with sendmail. With not much luck. Here's some debug info: sendmail -d0.12 -bt < /dev/null Canonical name: name.isp.com UUCP nodename: host a.k.a.: example2.com a.k.a.: example3.com ... Sendmail always uses canonical name (taken from eth0). I've found no way for it to select one of the UUCP codenames. It uses it for sending email: echo -e "To: [email protected]\nSubject: Test\nTest\n" | sendmail -bm -t -v test@example2.com... Connecting to [127.0.0.1] via relay... 220 name.isp.com ESMTP Sendmail 8.14.3/8.14.3/Debian-9ubuntu1; Wed, 31 Mar 2010 16:33:55 +0200; (No UCE/UBE) logging access from: localhost(OK)-localhost [127.0.0.1] >>> EHLO name.isp.com I'm ok with other SMTP solutions. I've looked briefly at nbsmtp, msmtp and nullmailer but I'm not sure thay can deal with disabling local delivery and selecting different domains when sending emails. I also know about spoofing sender field by using mail -a "From: <[email protected]>" but it seems to be a half-solution (mails are still sent from isp.com domain instead of proper example2.com, so PTR records are unused and there's more risk of being flagged as spam/spammer).

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• slicehost google apps mx settings

  - by Bob

  Hello All, I am banging my head against the wall on this one. I followed the MX setup tutorials for Google Mail and it didn't work. Currently, after deleting those records and adding the ones google suggested I have domain.com. 86400 IN MX 10 ASPMX.L.GOOGLE.com. domain.com. 86400 IN MX 20 ALT2.ASPMX.L.GOOGLE.com. domain.com. 86400 IN MX 20 ALT1.ASPMX.L.GOOGLE.com. domain.com. 86400 IN MX 30 ASPMX2.GOOGLEMAIL.com. domain.com. 86400 IN MX 30 ASPMX5.GOOGLEMAIL.com. domain.com. 86400 IN MX 30 ASPMX3.GOOGLEMAIL.com. domain.com. 86400 IN MX 30 ASPMX4.GOOGLEMAIL.com. according to the output of my dig command for my particular "domain". I can send email from google apps mail but I can not recieve any email. It gives me the following error: Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 #5.1.0 Address rejected name@domain.com Now I already tried following the slicehost MX article instructions straight as well and they did not work out for me. The domain has already been verified by google and it says the email is activated from their end. Any help would be appreciated : )

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• Configured Samba to join our domain, but logon fails from Windows machine

  - by jasonh

  I've configured a Fedora 11 installation to join our domain. It seems to join successfully (though it reports a DNS update failure) but when I try to access \\fedoraserver.test.mycompany.com I'm prompted for a password. So I enter adminuser and the password and that fails, so I try test.mycompany.com\adminuser and that too fails. What am I missing? EDIT (Update 9/1/09): I can now connect to the machine and see the shares on it (see my response to djhowell's answer) but when I try to connect, I get an error saying The network path was not found. I checked the log entry on the Fedora computer for the computer I'm connecting from (/var/log/samba/log.ComputerX) and it reads: [2009/09/01 12:02:46, 1] libads/cldap.c:recv_cldap_netlogon(157) no reply received to cldap netlogon [2009/09/01 12:02:46, 1] libads/ldap.c:ads_find_dc(417) ads_find_dc: failed to find a valid DC on our site (Default-First-Site-Name), trying to find another DC Config files as of 9/1/09: smb.conf: [global] Workgroup = TEST realm = TEST.MYCOMPANY.COM password server = DC.TEST.MYCOMPANY.COM security = DOMAIN server string = Test Samba Server log file = /var/log/samba/log.%m max log size = 50 idmap uid = 15000-20000 idmap gid = 15000-20000 windbind use default domain = yes cups options = raw client use spnego = no server signing = auto client signing = auto [share] comment = Test Share path = /mnt/storage1 valid users = adminuser admin users = adminuser read list = adminuser write list = adminuser read only = No I also set the krb5.conf file to look like this: [logging] default = FILE:/var/log/krb5libs.log kdc = FILE:/var/log/krb5kdc.log admin_server = FILE:/var/log/kadmind.log [libdefaults] default_realm = test.mycompany.com dns_lookup_realm = false dns_lookup_kdc = false ticket_lifetime = 24h forwardable = yes [realms] TEST.MYCOMPANY.COM = { kdc = dc.test.mycompany.com admin_server = dc.test.mycompany.com default_domain = test.mycompany.com } [domain_realm] dc.test.mycompany.com = test.mycompany.com .dc.test.mycompany.com = test.mycompany.com [appdefaults] pam = { debug = false ticket_lifetime = 36000 renew_lifetime = 36000 forwardable = true krb4_convert = false } I realize that there might be an issue with EXAMPLE.COM in there, however if I change it to TEST.MYCOMPANY.COM then it fails to join the domain with a preauthentication failure. As of 9/1/09, this is no longer the case.

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• SSL wildcard certificates and trailing 'www'

  - by user173326

  I've got a wildcard SSL certificate for *.mydomain.com. I'm using nginx, and redirecting all traffic for http to https, and also rewriting the URLs without a trailing www (if there is one). So it has, 1) http://subdomain.mydomain.com ---> https://subdomain.mydomain.com 2) http://www.subdomain.mydomain.com ---> https://subdomain.mydomain.com 3) https://www.subdomain.mydomain.com ---> https://subdomain.mydomain.com 4) https://subdomain.mydomain.com ---> https://subdomain.mydomain.com However, since my cert is for *.mydomain.com, case 3 gets an SSL error in chrome ('This is probably not the site that you are looking for!'), but if you click through it gets redirected and all is well. I understand why, since the initial connection is for https with a www (2 levels of subdomains), which doesn't match what is on the wildcard certificate. I thought a solution would be to get an additional cert for *.*.mydomain.com to cover www.*.mydomain.com. But it seems like that won't work. I spoke to agents from namecheap and comodo, and both said *.*.mydomain.com was not possible. I also came across this: https://support.quovadisglobal.com/KB/a60/will-ssl-work-with-multilevel-wildcards.aspx Is there a solution to this? To be able to cover www.*.mydomain.com?

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• Why are there unknown URLs in router log?

  - by Martin

  I recently looked at my router log. Why are a lot of requests that I don't send originated from a computer in my home network? They do not look like 3rd-party advertisements / images embedded in a page. The request have patterns, such as: top-visitor.com/look.php www.dottip.com/search/result.php?aff=8755&req=nickelodeon+games www.placeca.com/search/result.php?aff=3778&req=wireless+cell+phone www.bb5a.com/search.php?username=3348&keywords=flights www.blazerbox.com/search.php?username=2341&keywords=colorado+springs+real+estate www.freeautosource.com/search.php?username=sun100&keywords=vehicle www.1sp2.com/search.php?username=20190&keywords=las+the+hotel+vegas www.loadgeo.com/search/result.php?aff=10357&req=winamp www.exalt123.com/portal.php?ref=seo2007 www.7catalogs.com/search.php?username=la24&keywords=shutter www.theloaninstitute.com/search.php?username=kevin&keywords=webcam www.grammt.com/search.php?username=2530&keywords=bob And there are hundreds of these requests send within a second. So what's happening?

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• Sign multiple domains with single Domain Key (dk-filter)

  - by Lashae

  Motivation The private shopping website GILT, send periodical update emails from giltgroupe.bounce.ed10.net however all of the mails are signed with domain keys of giltgroupe.com. mailed-by giltgroupe.bounce.ed10.net signed-by giltgroupe.com My Story I couldn't manage to sign x.com with y.com 's domain key using dk-filter under Debian Lenny with postfix. If I try to init dk-filter service with following arguments: DAEMON_OPTS="$DAEMON_OPTS -d x.com,y.com -c nofws -k -i /var/dk-filter/internal_hosts -s /etc/dk-keys.conf" dk-filter service signs with domain x.com (d=x.com) If I change the daemon arg.s as following: DAEMON_OPTS="$DAEMON_OPTS -d x.com -c nofws -k -i /var/dk-filter/internal_hosts -s /etc/dk-keys.conf" then emails sent From y.com is not being signed. the dk-keys.conf file is as follows: *:/var/dk-filter/y.com/mail I managed to do same thing with DKIM, works perfect. However DK doesn't seem to work. I don't have any problem signing y.com's emails with y.com's key and x.com's emails x.com's key, which indicates there is no configuration problem. Do you have any experience/advice to make it possible to sign emails from multiple domains by a specific chosen domain?

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• Using my own Postfix, filtering spam and getting all the mail into my ISP's inbox

  - by djechelon

  Hello, I currently own a domain bought via GoDaddy.com, which provides me a basic email setup for the most common needs. I configured it to forward all mail to me@mydomain.com to me@myisp.com. I also own a virtual server with a running Postfix that I use for a specific website (all mail to somedomain.com gets forwarded via LMTP to a program written by me). Since I'm recently experiencing some harassing by spammers, since GoDaddy doesn't seem to filter spam, and since my Windows Phone's Pocket Outlook cannot filter spam, I would like to use SpamAssassin to filter inbound spam by changing my domain's MX records to my server My ideal setup is the following: All mail delivered to somedomain.com gets redirected via LMTP as usual via virtual transport without any spam check All mail to me@mydomain.com gets redirected to me@myisp.com after a severe spam check I don't care about otheraddress@mydomain.com since I use just one address for now I would like to train SpamAssassin with customized spam rules, possibly based on the presence of certain keywords (links to certain unsubscribe pages I found recurring) I currently configured Postfix with transport somedomain.com lmtp:[127.0.0.1]:8025 .somedomain.com error: Cannot accept mail for this domain relay somedomain.com OK (I guess I should add mydomain.com OK too) virtual @mydomain.com me@myisp.com (looks like a catch-all rule, it's OK as requirement 3) I installed SpamAssassin, I can do rcspamd start and set it to boot with the server, but I don't know if there is anything else to do for use in Postfix, and how to apply requirement 1 (only mail to mydomain.com gets filtered) I also tried to send an email via Telnet to make sure my settings are ready for MX change. I received the message into my account but I found that it gone through secureserver.net, like Postfix didn't rewrite the destination but simply relayed the message. Thank you in advance. I'm no expert in SpamAssassin, and I have little experience in Postfix (enough to avoid making my server an open relay)

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• Where to put the SPF TXT record?

  - by YellowSquirrel

  I've set up Google apps for my domain: I've registered the domain with Google by adding the CNAME Google asked and I've apparently succesfully setup the MX Google mail servers. So far I haven't yet a dedicated server: I'm just having a domain at a registrar. Now I want to activate SPF and I'm confused. In the following short webpage: http://www.google.com/support/a/bin/answer.py?answer=178723 it is written that I must add a TXT record containing: v=spf1 include:_spf.google.com ~all Where should I enter this? Should this go in the zone (?) file, like I did for the CNAME and the MX records? So far I have something like this: @ 10800 IN A 217.42.42.42 @ 10800 IN MX 5 ASPMX3.GOOGLEMAIL.COM. @ 10800 IN MX 5 ASPMX2.GOOGLEMAIL.COM. @ 10800 IN MX 3 ALT2.ASPMX.L.GOOGLE.COM. @ 10800 IN MX 3 ALT1.ASPMX.L.GOOGLE.COM. @ 10800 IN MX 1 ASPMX.L.GOOGLE.COM. google8a70835987f31e34 10800 IN CNAME google.com. Does adding the SPF TXT record mean I should literally have something like that: @ 10800 IN A 217.42.42.42 @ 10800 IN MX 5 ASPMX3.GOOGLEMAIL.COM. @ 10800 IN MX 5 ASPMX2.GOOGLEMAIL.COM. @ 3600 IN TXT "v=spf1 include:_spf.google.com ~all" @ 10800 IN MX 3 ALT2.ASPMX.L.GOOGLE.COM. @ 10800 IN MX 3 ALT1.ASPMX.L.GOOGLE.COM. @ 10800 IN MX 1 ASPMX.L.GOOGLE.COM. google8a70835987f31e34 10800 IN CNAME google.com. I made that one up and included right in the middle to show how confused I am. What I'd like to know is the exact syntax and where/how I should put this TXT record.

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• ipv6 reverse DNS delegation

  - by user1709492

  I currently have 2001:1973:2303::/48 assigned to me and i'll be assigning /64's to customer's I'd like to have 1 zonefile for the /48 where i can essentially point / redirect query to different nameservers. Example ( Desired effect ) 2001:1973:2303:1234::/64 -> ns1.example.com, ns2.example.com 2001:1973:2303:2345::/64 -> ns99.example2.com, ns100.example2.com 2001:1973:2303:4321::/64 -> ns1.cust1.com, ns2.cust1.com Current /48 zonefile $TTL 3h $ORIGIN 3.0.3.2.3.7.9.1.1.0.0.2.ip6.arpa. @ IN SOA ns3.example.ca. ns4.example.ca. ( 2011071030 ; serial 3h ; refresh after 3 hours 1h ; retry after 1 hour 1w ; expire after 1 week 1h ) ; negative caching TTL of 1 hour IN NS ns3.example.ca. IN NS ns4.example.ca. 1234 IN NS ns1.example.com. NS ns2.example.com. 2345 IN NS ns99.example2.com. NS ns100.example2.com. 4321 IN NS ns1.cust1.com. NS ns2.cust1.com. Where am i going wrong ? My request seems simple to me atleast. To put it in terms of firewalling i want to redirect traffic client queries 2001:1973:2303:4321::1 - ns3.example.ca sees the request and redirects the query to ns1.cust1.com - ns1.cust1.com answers the query with omg.itworks.ca ( provided ns1.cust1.com is properly configured.

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• My smtp server is spammed?

  - by Milos

  I have a server and the postfix client on it. Since several days, I noticed a lot of processes running there. When checked, there are a lot of emails sent. Here is an example from the mail log: Aug 18 11:54:56 mem postfix/smtpd[9963]: connect from dslb-188-096-082-167.188.096.pools.vodafone-ip.de[188.96.82.167] Aug 18 11:54:56 mem postfix/smtpd[9301]: connect from unknown[186.113.45.4] Aug 18 11:54:56 mem postfix/smtpd[9963]: 525E7114012D: client=dslb-188-096-082-167.188.096.pools.vodafone-ip.de[188.96.82.167] Aug 18 11:54:56 mem postfix/cleanup[9970]: 525E7114012D: message-id=<B55835C9027BFA9D16CCBB556DB2F48BB82DF004000480BA-db0c3ce8aa74446411898d0d2feb3001@email.filmforthoughtinc.com> Aug 18 11:54:56 mem postfix/qmgr[2581]: 525E7114012D: from=<[email protected]>, size=10702, nrcpt=1 (queue active) Aug 18 11:54:56 mem postfix/smtpd[9301]: EC52711401DC: client=unknown[186.113.45.4] Aug 18 11:54:57 mem postfix/smtpd[9963]: disconnect from dslb-188-096-082-167.188.096.pools.vodafone-ip.de[188.96.82.167] Aug 18 11:54:57 mem postfix/cleanup[8597]: EC52711401DC: message-id=<4C905D97606B436FE50C6F738DE014D9D84F2185BA815D81-1a4dbe6fc2bfcc8183f5faf901cfa15e@email.manguerasespecializadas.com> Aug 18 11:54:57 mem postfix/smtp[9971]: 525E7114012D: to=<[email protected]>, relay=mail.mdpi.com[209.237.236.228]:25, delay=1.2, delays=0.55/0/0.45/0.16, dsn=5.1.1, status=bounced (host mail.mdpi.com[209.237.236.228] said: 550 5.1.1 <[email protected]>: Recipient address rejected: mdpi.com (in reply to RCPT TO command)) Aug 18 11:54:57 mem postfix/cleanup[10067]: 8B1E11140268: message-id=<[email protected]> Aug 18 11:54:57 mem postfix/bounce[10001]: 525E7114012D: sender non-delivery notification: 8B1E11140268 Aug 18 11:54:57 mem postfix/qmgr[2581]: 8B1E11140268: from=<>, size=12693, nrcpt=1 (queue active) Aug 18 11:54:57 mem postfix/qmgr[2581]: 525E7114012D: removed Aug 18 11:54:57 mem postfix/qmgr[2581]: EC52711401DC: from=<[email protected]>, size=10978, nrcpt=1 (queue active) Aug 18 11:54:57 mem postfix/smtp[10013]: connect to aspmx.l.google.com[2607:f8b0:400d:c03::1b]:25: Network is unreachable Aug 18 11:54:57 mem postfix/smtpd[9301]: disconnect from unknown[186.113.45.4] Aug 18 11:54:58 mem postfix/smtp[10013]: 8B1E11140268: to=<[email protected]>, relay=aspmx.l.google.com[74.125.22.26]:25, delay=0.5, delays=0.06/0/0.28/0.16, dsn=5.1.1, status=bounced (host aspmx.l.google.com[74.125.22.26] said: 550-5.1.1 The email account that you tried to reach does not exist. Please try 550-5.1.1 double-checking the recipient's email address for typos or 550-5.1.1 unnecessary spaces. Learn more at 550 5.1.1 http://support.google.com/mail/bin/answer.py?answer=6596 l7si24621420qad.26 - gsmtp (in reply to RCPT TO command)) Aug 18 11:54:58 mem postfix/qmgr[2581]: 8B1E11140268: removed Aug 18 11:54:58 mem postfix/smtp[9971]: EC52711401DC: to=<[email protected]>, relay=mail.mdpi.com[209.237.236.228]:25, delay=1.2, delays=0.66/0/0.44/0.12, dsn=5.1.1, status=bounced (host mail.mdpi.com[209.237.236.228] said: 550 5.1.1 <[email protected]>: Recipient address rejected: mdpi.com (in reply to RCPT TO command)) Aug 18 11:54:58 mem postfix/cleanup[9970]: 414361140254: message-id=<[email protected]> Aug 18 11:54:58 mem postfix/bounce[10001]: EC52711401DC: sender non-delivery notification: 414361140254 Aug 18 11:54:58 mem postfix/qmgr[2581]: 414361140254: from=<>, size=13057, nrcpt=1 (queue active) Aug 18 11:54:58 mem postfix/qmgr[2581]: EC52711401DC: removed Aug 18 11:55:01 mem postfix/smtp[10002]: 414361140254: to=<[email protected]>, relay=manguerasespecializadas.com[99.198.96.210]:25, delay=2.9, delays=0.04/0/2.1/0.84, dsn=2.0.0, status=sent (250 OK id=1XJPGs-0007BE-OI) Aug 18 11:55:01 mem postfix/qmgr[2581]: 414361140254: removed IS my server attacked, spammed? How to check that? Thank you.

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• Postix transport smtp failover

  - by SimonJGreen

  We have a multi-tenant email relay set up that has a transport map file that looks like this: domain1.com smtp:mail.domain1.com domain2.com smtp:mail.domain2.com domain3.com smtp:mail.domain3.com [etc] In the event mail.domain1.com is down, email for domain1.com will be held by the postfix server until mail.domain1.com starts responding again. However we have a customer who has a backup DSL line on their site, an their email server is also available over this. How can I tell the transport to failover to a different host if the first is unavailable?

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• How to set up hosting on Heroku and email forwarders on a WHM (cPanel)?

  - by matija

  I'm using DNSimple for managing my records, hosting my site at Heroku and I want to use a Linux WHM (cPanel) for managing emails forwarding (DNSimple has that feature, but it's currently not working properly). Hosting works, but I'm having a hard time getting emails to work. Here are my (pseudo-)records: Type Name TTL Points to --------------------------------------------------------- ALIAS | mydomain.com | 3600 | mydomain.herokuapp.com CNAME | www.mydomain.com | 3600 | mydomain.herokuapp.com CNAME | mail.mydomain.com | 600 | <WHM server IP address> MX | mydomain.com | 600 | <WHM server IP address> NS | mydomain.com | 3600 | ns1.dnsimple.com ... | ... | ... | ... NS | mydomain.com | 3600 | ns4.dnsimple.com There are two more records, SOA and TXT, generated by DNSimple, but I don't think those are relevant. When I add an A-record: A | mydomain.com | 3600 | WHM server IP address and change the mail CNAME and MX records to mydomain.com, emails start working, but then the hosting doesn't work anymore. Is this possible to achieve?

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