Can't recieve email from external account (no bounce message)

[sampson]

Hi. I'm running on ec2 (if relevant) and ran through the perfect-server-debian-lenny-ispconfig3 tut.

The registrar is Godaddy, and I've set up hosts ns1 and ns2 to point to my servers IP, and set the nameserver entries to the above. I used to run my own Plesk box on a DSL with the same config, and all worked as expected, so I don't think the problem is here.

I added a DNS zone in ispconfig:




And Records:

 	A  	        domain.com  	        123.456.789.123  	0  	
	CNAME  	        www.domain.com 	        domain.com  	  	0 	
	MX 	        domain.com 	        mail.domain.com  	10 	
	NS 	        domain.com 	        ns1.domain.com  	0 	
	NS 	        domain.com 	        ns2.domain.com  	0

An Email Domain:

domU-00-00-00-00-00-00.compute-1.internal 	mail.domain.com

And mailbox with receiving enabled.

I can send email to external addresses from this account via squirrelmail, and through external email programs such as Mail (though, both the incoming and outgoing servers will only work if entered like "domain.com" as opposed to "mail.domain.com" in the external email client config - don't know why). These emails are received by the external accounts fine. But when I reply, nothing happens. No bounce, no errors in the logs, nothing in the queue. Just silent failure. However, if I send the email to its own address (e.g. from: test@domain.com to:test@domain.com) it works, even from external email client.

I was having problems with clamav after install. Out of date errors, and unable to update errors. I disabled clamav by commenting out the call to it in /etc/amavis/conf.d/15-av_scanners while I try to get everything working.

When I ran through ISPConfig, I used the given public dns name as the fqdn (something like ec2-00-00-00-00.compute-0.amazonaws.com).

tl;dr: email can go out, but can't come in.

Thanks for any tips/direction!

[till]

I was having problems with clamav after install. Out of date errors, and unable to update errors. I disabled clamav by commenting out the call to it in /etc/amavis/conf.d/15-av_scanners while I try to get everything working.

This might be the reason for the disappaering messages. Please undo your changes and fix the problem as described in the ISPConfig FAQ:

http://www.faqforge.com/linux/how-to...ian-5-0-lenny/

Then send a message from an external source and post the lines that get added to the mail log when the email arrives at your server.

[sampson]

Originally Posted by till

Then send a message from an external source and post the lines that get added to the mail log when the email arrives at your server.

Thanks for the reply.

I fixed/undid the disabling of ClamAV, and followed the linked FAQ to upgrade. However, I still get the error:

WARNING: Your ClamAV installation is OUTDATED!
WARNING: Local version: 0.95.3 Recommended version: 0.96

(It used to be 0.94, so the upgrade did work).

I rebooted after doing this and then cleared all my mail logs. This is the output immediately after sending an email from gmail, then checking it from squirrelmail:

/var/log/mail.log:

Apr 28 15:36:16 domU-00-00-00-00-00-00 imapd: Connection, ip=[::ffff:127.0.0.1]
Apr 28 15:36:16 domU-00-00-00-00-00-00 imapd: LOGIN, user=test@domain.com, ip=[::ffff:127.0.0.1], port=[55986], protocol=IMAP
Apr 28 15:36:16 domU-00-00-00-00-00-00 imapd: LOGOUT, user=test@domain.com, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=87, sent=391, time=0

/var/log/mail.info:

Apr 28 15:36:16 domU-00-00-00-00-00-00 imapd: LOGIN, user=test@domain.com, ip=[::ffff:127.0.0.1], port=[55986], protocol=IMAP
Apr 28 15:36:16 domU-00-00-00-00-00-00 imapd: LOGOUT, user=test@domain.com, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=87, sent=391, time=0

/var/log/mail.err is blank, as is /var/log/mail.warn.

As you can see, there is no indication that the email I sent got to the server, or at least to these logs...

Here is netstat -tap:

tcp        0      0 localhost.localdo:10024 *:*                     LISTEN      1009/amavisd (maste
tcp        0      0 localhost.localdo:10025 *:*                     LISTEN      1633/master     
tcp        0      0 *:mysql                 *:*                     LISTEN      1071/mysqld     
tcp        0      0 localhost.localdo:spamd *:*                     LISTEN      1175/spamd.pid  
tcp        0      0 *:sunrpc                *:*                     LISTEN      886/portmap     
tcp        0      0 localhost.localdom:1008 *:*                     LISTEN      1680/famd       
tcp        0      0 *:ftp                   *:*                     LISTEN      1647/pure-ftpd (SER
tcp        0      0 domU-00-00-00-00-00-00:domain *:*                     LISTEN      1568/mydns      
tcp        0      0 localhost.locald:domain *:*                     LISTEN      1568/mydns      
tcp        0      0 *:ssh                   *:*                     LISTEN      981/sshd        
tcp        0      0 *:smtp                  *:*                     LISTEN      1633/master     
tcp        0    288 domU-00-00-00-00-00-00:ssh 12-23-45-67.stati:23902 ESTABLISHED 1815/0          
tcp6       0      0 [::]:imaps              [::]:*                  LISTEN      1542/couriertcpd
tcp6       0      0 [::]:pop3s              [::]:*                  LISTEN      1565/couriertcpd
tcp6       0      0 [::]:pop3               [::]:*                  LISTEN      1553/couriertcpd
tcp6       0      0 [::]:imap2              [::]:*                  LISTEN      1530/couriertcpd
tcp6       0      0 [::]:http-alt           [::]:*                  LISTEN      1752/apache2    
tcp6       0      0 [::]:www                [::]:*                  LISTEN      1752/apache2    
tcp6       0      0 [::]:tproxy             [::]:*                  LISTEN      1752/apache2    
tcp6       0      0 [::]:ftp                [::]:*                  LISTEN      1647/pure-ftpd (SER
tcp6       0      0 ip6-localhost:domain    [::]:*                  LISTEN      1568/mydns      
tcp6       0      0 [::]:ssh                [::]:*                  LISTEN      981/sshd        
tcp6       0      0 [::]:https              [::]:*                  LISTEN      1752/apache2

Thanks again.

[falko]

MX domain.com mail.domain.com 10

Did you create an A record for mail.domain.com?

[sampson]

I did indeed create an A record. Turns out the problem was that I hadn't opened port 53 UDP (I only had 53 TCP open). Once I opened UDP it started functioning correctly.

Much thanks for your help!