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  • If I don't want subdomains to send out email, do I need SPF records for them?

    - by Phil
    I have a main domain with (now) valid SPF record, but we also programmatically create lots and lots of subdomains for clients via cpanel PHPXML API. These subdomains are not intended to send any mail. When we create them, they are getting an A record of my ip, and a TXT record of "v=spf1 +a +mx +ip4:[MY IP] ?all". Those are all the DNS records they have Recently we have had a lot of email spoofing and realized there was an invalid (duplicate SPF) for our main domain. We just fixed that, but are unsure if: 1) Can spammers still spoof email from subdomains without MX records, with above current listed SPF? 2) Is it better to have no SPF for subdomains than the one I have listed? 3) Is there a way to prevent subdomains from sending/spoofing email via my main domain's SPF? Here is the main domain SPF that our host suggested we switch to: "v=spf1 a mx ptr a:dedrelay.[webhost].com include:dedrelay.[webhost].com ~all"

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  • In-Place DC Upgrade from Server 2003R2 Standard to 2008 Enterprise

    - by Yadhu Tony
    We have a Domain controller in server 2008 Enterprise and Additional DC in server 2003 R2. Now I need to upgrade Additional Domain controller to Server 2008 Enterprise and raise the domain functional level to 2008. The DC is running with Active Directory, DNS and DHCP. The server is installed in VMware ESXi 4.0. Please guide me to carry out the upgrade. Also I want to know about the possible risk of in-place upgrade, if any.

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  • How to configure hostname for `apache22` package on FreeBSD?

    - by Eonil
    I'm configuring development & test FreeBSD machine on VM. I installed apache22 package and restarted. But the daemon does not started with this error: %apachectl start httpd: apr_sockaddr_info_get() failed for test.box httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName (13)Permission denied: make_sock: could not bind to address [::]:80 (13)Permission denied: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs % My hostname is test.box. Because this is temporary test box, it has no real domain-name. But I used 2-level name to avoid long time waiting of sshd on booting. However, I searched web, and I modified /etc/hosts file like this (I didn't touches this file before): # This is original configuration #::1 localhost localhost.my.domain #127.0.0.1 localhost localhost.my.domain # New configuration ::1 localhost test.box 127.0.0.1 localhost test.box 127.0.0.1 test.box test Now apache fails with this error message: %apachectl start httpd: Could not reliably determine the server's fully qualified domain name, using test.box for ServerName (13)Permission denied: make_sock: could not bind to address [::]:80 (13)Permission denied: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs % I don't know what's required now. Please let me know reason and solution of this error. ---- (edit) ---- The permission errors are caused from omission of sudo.

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  • Correct use of SMTP "Sender" header?

    - by Eric Rath
    Our web application sends email messages to people when someone posts new content. Both sender and recipient have opted into receiving email messages from our application. When preparing such a message, we set the following SMTP headers: FROM: [email protected] TO: [email protected] SENDER: [email protected] We chose to use the author's email address in the FROM header in an attempt to provide the best experience for the recipient; when they see the message in their mail client, the author is clear. To avoid the appearance of spoofing, we added the SENDER header (with our own company email address) to make it clear that we sent the message on the author's behalf. After reading RFCs 822 and 2822, this seems to be an intended use of the sender header. Most receiving mail servers seem to handle this well; the email message is delivered normally (assuming the recipient mailbox exists, is not over quota, etc). However, when sending a message FROM an address in a domain TO an address in the same domain, some receiving domains reject the messages with a response like: 571 incorrect IP - psmtp (in reply to RCPT TO command) I think this means the receiving server only saw that the FROM header address was in its own domain, and that the message originated from a server it didn't consider authorized to send messages for that domain. In other words, the receiving server ignored the SENDER header. We have a workaround in place: the webapp keeps a list of such domains that seem to ignore the SENDER header, and when the FROM and TO headers are both in such a domain, it sets the FROM header to our own email address instead. But this list requires maintenance. Is there a better way to achieve the desired experience? We'd like to be a "good citizen" of the net, and all parties involved -- senders and recipients -- want to participate and receive these messages. One alternative is to always use our company email address in the FROM header, and prepend the author's name/address to the subject, but this seems a little clumsy.

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  • How do I host multiple domains on Ubuntu Server (Hardy Heron)?

    - by markle976
    I am trying to figure out the best way to host multiple domains on my Ubuntu server. I have tried multiple options, but I can't get everything to work the way I want it to. I want to be able to add domains without having to restart Apache each time. I tried using mod_vhost_alias (see below), but that maps www.domain.com and domain.com to different folders. I also need to be able to use mod_rewite to map requests for domain.com/app/* to domain.com/somescript.php current httpd.conf: UseCanonicalName Off VirtualDocumentRoot /var/www/%0 Any thoughts?

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  • Accessing C$ over LAN on Win2008R2 - cannot by hostname but can by IP and FQDN

    - by Idgoo
    Having an issue with one of our Win2k8 R2 file servers. Trying to access C$ or the Admin share is giving us an error (see error details that the bottom), however we are able to connect using the server's IP and FQDN. can access \\172.16.x.x\c$ with domain cred can access \\server.domain.local\c$ with domain creds cannot access \\servername\c$ with same domain creds Server pings fine with Hostname, IP, FQDN, the Primary DNS suffix is also correct. DNS, PTR and Wins records are all correct for the Server I have checked that I am not trying to connect with cached credentials in the Windows vault, the server is also appending primary and connection specific DNS suffixes to the hostname. Any ideas what might be causing this issue? Error Details: c$ is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions

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  • What is the best way to make a test duplicate of an AD DC?

    - by Puddingfox
    I have a production Active Directory Server running on a Windows Server 2008 R2 machine. I would like to make a duplicate of this machine with all setting the same, except the domain would be a slight variation of the current domain (think winnet to winnet2). Would it be easiest to try to clone the hard drive while the machine is running and change the domain on the clone in a different machine or export the data and import it on a different box?

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  • Samba / smbd on Centos 6.5

    - by Satalink
    I've installed Samba4 and have the smb.conf file as follows: [global] workgroup = WORKGROUP server string = Samba Server realm = REXIALO.COM netbios name = REXIALO.COM security = user map to guest = Bad Password bind interfaces only = no interfaces = lo venet0 log file = /var/log/samba/samba.log max log size = 1000 [webroot] path = /usr/local/apache/htdocs comment = Example.com webroot directory read only = No I can connect from the same server with smbclient. Localhost: # smbclient -L localhost -U root Domain=[WORKGROUP] OS=[Unix] Server=[Samba 4.1.11] Sharename Type Comment --------- ---- ------- webroot Disk RexiAlo webroot directory IPC$ IPC IPC Service (RexiAlo Samba Server) Domain=[WORKGROUP] OS=[Unix] Server=[Samba 4.1.11] Server Comment --------- ------- Workgroup Master --------- -------Enter root's password: network: # smbclient -L rexialo.com -U Domain=[WORKGROUP] OS=[Unix] Server=[Samba 4.1.11] Sharename Type Comment --------- ---- ------- webroot Disk RexiAlo webroot directory IPC$ IPC IPC Service (RexiAlo Samba Server) Domain=[WORKGROUP] OS=[Unix] Server=[Samba 4.1.11] Server Comment --------- ------- Workgroup Master --------- ------- The problem is when I try to map to the smb webroot from Windows 7, it asks for user/pass but just times out and then prompts for credentials. The samba.log file does not show any activity other than the startup of the smbd process. Any help would be appreciated.

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  • nagios ldap-group based front end login permission issues

    - by Eleven-Two
    I want to grant users access to the nagios 3 core frontend by using an active directory group ("NagiosWebfrontend" in the code below). The login works fine like this: AuthType Basic AuthName "Nagios Access" AuthBasicProvider ldap AuthzLDAPAuthoritative on AuthLDAPURL "ldap://ip-address:389/OU=user-ou,DC=domain,DC=tld?sAMAccountName?sub?(objectClass=*)" AuthLDAPBindDN CN=LDAP-USER,OU=some-ou,DC=domain,DC=tld AuthLDAPBindPassword the_pass Require ldap-group CN=NagiosWebfrontend,OU=some-ou,DC=domain,DC=tld Unfortunately, every nagios page just shows "It appears as though you do not have permission to view information for any of the services you requested...". I got the hint, that I am missing a contact in nagios configuration which is equal to my login, but creating one with the same name as the domain user had no effect on this issue. However, it would be great to find a solution without manually editing nagios.conf for every new user, so the admins could grant access to nagios by just putting the user to "NagiosWebfrontend" group. What would be the best way to solve it?

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  • mod_rewrite filename from mod_pagespeed back to normal files

    - by British Sea Turtle
    I am hoping someone can help me with this problem. I am moving to a new server and not using mod_pagespeed any more. However we have lots of external links to images on our site using the strange mod_pagespeed filenames. This is not an issue but we do not want to have lots of 404 errors. So I have lots of links like the following : http://www.domain.com/images/150x150xlink.png.pagespeed.ic.pPXw45HSQm.png http://www.domain.com/images/paris_01.gif.pagespeed.ce.vfrkuKUaj0.gif http://www.doamin.com/images/1st2.gif.pagespeed.ce.OUg38q6VbZ.gif How can I redirect them to : http://www.domain.com/images/150x150xlink.png http://www.domain.com/images/paris_01.gif http://www.doamin.com/images/1st2.gif There are thousands of files like this so I am hoping for a simple solution with mod_rewrite, I tried this but it does not work. So any help would be appreciated. RewriteCond %{REQUEST_URI} \.gif\.pagespeed\. [NC] RewriteRule ^(.*?\.gif)\..*\.gif$ $1 [NC,L]

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  • Apache Virtual Hosts behind Cisco Router

    - by Theo
    I'm setting up an Apache 2.2 Ubuntu web server for internal services that is also supposed to be accessed from outside our LAN. Our LAN has a single external IP that is the external IP of our RV042 Cisco router. We have set up several A records on our external DNS server that point to this IP. Our internal DNS server resolve the same records to the internal IP of our web server, so computers from inside the network can access them using the same address as if they were outside. We forwarded the router's external 80 port to our web server's 80 port. I have set up one Virtual Host for each domain name in our list, and my httpd.conf is something like this: ServerName web.domain.com NameVirtualHost *:80 <VirtualHost *:80> ServerName alfresco.domain.com <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass /alfresco http://localhost:8080/alfresco ProxyPassReverse /alfresco http://localhost:8080/alfresco ProxyPass /share http://localhost:8080/share ProxyPassReverse /share http://localhost:8080/share </VirtualHost> <VirtualHost *:80> ServerName crm.domain.com DocumentRoot /var/www/sugarcrm </VirtualHost> Now, this works if we are in our LAN. However, if we are outside of our LAN we reach our web server's default page saying: It Works! This is the default web page for this server. But we can't reach the virtual hosts, as if the domain name is not being preserved when the router forward the packets to the web server. Am I doing something wrong? How can I check what is going on? What should be the settings to make this work from outside?

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  • How to control DVR connected cameras as IP Cameras

    - by Ajay
    We have analog IR cameras (not IP Cameras) and they are connected to DVR model no is (DVR Model: DVR H264, 16 Channel - ECOR264-16X1). We assigned a static IP to DVR and able to view all the cameras connected to it. Our requirement is to view individual cameras and recording option in remote location (the recorded data should store in remote) as like IP Cameras. Is it possible, if not, are there any DVR Model which can support like this.

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  • Group policies - WSUS

    - by cory
    Hello, I am really lost as to what is the reason as to why my group policy is not working on my domain. I have setup a GPO for my wsus server to a specific OU in my domain. It seems as of right now, none of my machines have inherited that GPO. I have manually put it in quite a few computers. Most of my computers in the domain are linked up to my wsus server, but all my desired settings are not there. If I run gpresult /R, On one computer I ran this on, it is linking to my backup domain controller and not my main. On another computer I checked this on, it is linking to my main DC, but it did no inherit the GPO. When looking on my DC on gpmc - I see the policy is forced to the OU as #1 precedence. Thank for any help.

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  • RDP suggesting a user name when connecting to a server

    - by Neolisk
    Prior to Event X, RDPing to Server 2003 always caused the user name appear blank and Login to be enabled, so you could pick to which domain you would log in. For us it's either local or our domain. Since a recent Event X a domain + user name is being suggested for every server and it's not the most recently used user name. If you remove it manually from RDP dialog, it's still being pre-populated for you, and then at the next available opportunity it returns into General/User name option of RDP dialog. So user name field comes pre-populated and you cannot change to log in locally (only if you manually erase domain specifier - everything before \) - Log in to option is disabled by default. We did not do any changes to our domain or client machines, so I am suspecting some Windows update caused it (and this being Event X). Interesting fact - it does not consistently happen on all machines, and some can login to some servers fine, while other servers keep suggesting a default user name. What could be that Event X and is there a way to fix it? EDIT: I tried this - How to clear remote desktop connections history and specifically this part of it: reg delete "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\UsernameHint" /f The problem still persists.

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  • User receives group membership error to terminal server even though has rights

    - by BlueToast
    http://www.hlrse.net/Qwerty/TSLoginMembership.png To log on to this remote computer, you must be granted the Allow log on through Terminal Services right. By default, members of the Remote Desktop Users group have this right. If you are not a member of the Remote Desktop Users group or another group that has this right, or if the Remote Desktop User group does not have this right, you must be granted this right manually. Only as of today a particular user began receiving this message for a second terminal server they use; otherwise, they have never had any problems authenticating into this server. We have no restrictions on simultaneous and multiple logins. On each terminal server, we have a group and security group like "_Users" locally in the Builtin\Remote Desktop Users group. For this particular user, on this particular terminal server we have locally given him Administrator, Remote Desktop Users, and Users membership; in AD we have given him DOMAIN\Administrator, Builtin\Remote Desktop Users, DOMAIN\_Users. It still gives us that error message. We gave him membership to another terminal server (random) by simply making him member of another DOMAIN\_Users group -- successfully able to login to that random terminal server. So, from scratch we created an AD account 'dummy' (username) with only Domain Users membership. Tried to login to this particular server, no success. So I added 'dummy' to DOMAIN\_Users group, and then was successfully able to login. Other users from this user's department are able to login to this particular server just fine as well. We checked the Security logs on this particular server, and while it is logging everything, the only thing it appears to not log are these failed login attempts from this particular user who receives this error message. We have tried rebooting the server, and the user is still receiving that error message.

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  • Exchange 2007 Receive E-Mail for other Domains

    - by Loop
    My organisation has Exchange 2007 e-mail server, and now, we want to host e-mail service for other organisation (neworg.com) I added new Authoritative Active Domain neworg.com, but when adding a new mailbox, there is no option to chose new SMTP domain name neworg.com, and I can't add new user with SMTP domain [email protected]. Probably I misunderstood something while reading posts on Internet, but can someone help please?

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  • How to setup IIS subdomain pointing to folder on remote machine?

    - by zsharp
    Im trying to serve static content through a subdomain. The physical folder is shared on a second machine in the same local domain. How do I safely setup permissions on the shared folder so that when i do something like: src="subdomain.domain.com/Image1.png" I wont get access denied? IN IIS I have subdomain.domain.com as a separate website.

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  • Setting up a server with only subdomains, any connection to top level goes to main server on another IP?

    - by Anagio
    I'm developing a web app where users will have their own sub-domain to login to and use the application. I'm running wordpress for the main website to manage the public / front end. Our application is developed in zend framework. The zf project is currently in a subfolder on the main server. I'd like to place the zend framework project onto another server (different IP) and keep it separate from the the wordpress front end www.domain.com site. The zf application server will run nginx. I'm not sure how to setup a server to run strictly sub domains. Setting up the virtual hosts in the configuration file is no problem. To give the users username.domain.com. But what about the main default configuration file? How would that be configured since the top level domain is technically another server (wordpress) on another IP?

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  • Internal Server Error on HTTPS SSL URL

    - by spike5792
    I am running cPanel/WHM on Apache server and have just installed an SSL certificate for a single domain. Domain/server is on a fixed dedicated IP address. I'm given the 'successfully installed' message when installing the SSL certificate, however when trying to visit the domain using https, the 500 Internal Server Error message appears: The server encountered an internal error or misconfiguration and was unable to complete your request. Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

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  • Opendns like 404 page [migrated]

    - by Dmbekker
    People who use OpenDNS and go to a non-existing domain are getting a nice fancy search page telling them that the domain doesn't exists instead of the browser error page. here in my home network we have a win 2008-r2 server with the dns role enabled. Is there any way to make my own fancy looking error page to show up at all computers when they enter a domain not found by the local dns server and the Forwarders / root hints servers? -- David,

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  • Server redirect

    - by Tyy
    I have asp.net app XYZ which requires SSL. I am supposed to work with IIS that has only one Web Site - DefaultWebSite - containing multiple apps and virtual directories (3rd party). So, my app is located at domain.com/XYZ. I have to meet these conditions: 1.) requesting DefaultWebSite (domain.com) will run my app. It could redirect to ../XYZ, but I would rather not to. If it has to be done this way, requesting DefaultWebSite or my app over both HTTP and HTTPS will always ends up with redirecting to https://domain.com/XYZ 2.) I can't touch any other apps or virtual directories, can't create additional Web Site, can't set DefaultWebSite to require SSL, ... EDIT: 3.) transmitted data (GET or POST) must be preserved I tried to: set Web Site root directory to my app, but it this caused other apps to crash because of my Web.config (not sure why). set up HTTP redirect on DefaultWebSite to https://domain.com/XYZ. This seems to work correctly, but this doesn't work if user requests my app directly (redirected to domain.com/XYZ/XYZ, or redirect loop). set up Default Document, but this seems to work only if it is located in the Web Site root directory. I know I could write simple .aspx with Response.Redirect, but... is there any better solution? Am I missing something?

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  • Hyper-V Server 2008 Configuration

    - by Eternal21
    I need to set-up Lync on a Server 2008 machine. The problem is that Lync cannot be set up on a Domain Controller. That means I need to have one Server 2008 that's a domain controller and another that's Server 2008 running Lync. I figured the best way would be hosting it on a single machine, using virtual machines. I installed Server 2008, but now my question is this. Do I add two virtual machines (Domain Controller and Lync), or do I only add one virtual machine for Lync, and the 'parent' Server 2008 can act as a domain controller?

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  • Sending mail via Exchange, why am I being flagged as spam?

    - by Dan
    Exchange 2007 uses direct DNS for all outgoing mail. Mail that is sent from our public IP (1.2.3.4 - this is the IP of my mailserver) is delivered to the spam folders for providers such as Comcast and yahoo. Currently, our SPF looks like this: v=spf1 ip4:1.2.3.4 mx a:mail.domain.com ?all MX: mail.domain.com.(10) The reverse DNS entry on our ISP is mail.domain.com for our IP The banner HELO response from our server is <220 mail.domain.com Our IP address is NOT blacklisted anywhere, and the Cisco Senderbase gives us a score of Good What is the reason our mail doesn't look legit?

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  • How to set multiple subdomains in the host file (DNS)?

    - by Milos
    I have a lot of subdomains in the main domain xxx.zzz So, for this domain, I can have aaa.xxx.zzz bbb.xxx.zzz ccc.xxx.zzz ddd.xxx.zzz eee.xxx.zzz ....ETC.... Istead of adding each subdomain in the host file, I would like to add only the main domain xxx.zzz and then to be able to access all the subdomains. I have tryed with *.xxx.zzz but apparently, this will not work (Linux or Windows). Any idea is welcome. Thank you very much.

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