Exim: 421 Lost incoming connection

[bmcpanel]

Customers are getting the following type of messages from exim (Multiple customers/multiple domains on the same server). Does anyone know what it means and how to correct it?

===============================
An error was detected while processing a file of BSMTP input.

The error message was:

421 Lost incoming connection


The SMTP transaction started in line 0.

The error was detected in line 3.

0 previous messages were successfully processed.

The rest of the batch was abandoned.

421 Lost incoming connection

Transaction started in line 0

Error detected in line 3

cPanel.net Support Ticket Number:

 

[bmcpanel]

This is still happening today. POP email is down during this time. Several customers are affected. I have reset POP and Exim, for good measure. The problem still exists.

Surely I am not the only person having this problem? Seems related to a recent upgrade?

------ [email protected] ------

An error was detected while processing a file of BSMTP input.
The error message was:

421 Lost incoming connection

The SMTP transaction started in line 0.
The error was detected in line 3.
0 previous messages were successfully processed.
The rest of the batch was abandoned.
421 Lost incoming connection
Transaction started in line 0
Error detected in line 3
-------------------------------

If sending a test mail to my address and checking the inbox files on the server - it never arrives there. So, it's not a matter I cannot collect mails (only get "no new messages") - they never make it to the inbox on the server at all.

cPanel.net Support Ticket Number:

 

[bmcpanel]

Ummm, yep. Confirmed. Still happening. Nothing seems to correct the problem. Green lights on service manager for POP, and resetting server has not solved the problem.

cPanel.net Support Ticket Number:

 

[Website Rob]

Although it's obvious that the Services themselves are running properly, it's also obvious there is a problem with some of the Server files -- possibly DNS or Mail related. Using this link:

http://dnsreport.com/

does it show any errors, especially for Mail?

I have never seen or heard of this problem and, like any new problem, would start at the beginning with my troubleshooting.

cPanel.net Support Ticket Number:

 

[bmcpanel]

Dnsreports.com gives a clean report. There are a few warnings concerning SOA expire times, but nothing in red.

Mail report shows a clean catch with no warnings. This truely is bizarre.

cPanel.net Support Ticket Number:

 

[AbeFroman]

I am having the same problem, HELP!!!!!!!!!!11

cPanel.net Support Ticket Number:

 

[bmcpanel]

Ah, I knew this wasn't just my problem. Obviously, others are having the problem, even if you do not yet know it.

Abe thinks he fixed it. See this thread. I will verify shortly.

http://forums.cpanel.net/showthread.php?s=&threadid=12417

cPanel.net Support Ticket Number:

 

[bmcpanel]

Cannot confirm that the fix Abe used works. My server still has problems with POP email. All customers seem to be affected. Customers can send email but cannot receive POP email. Webmail works fine.

Any suggestions? Anyone??

cPanel.net Support Ticket Number:

 

[cPanelNick]

Check /var/log/exim_mainlog. It should tell you why it failed.

cPanel.net Support Ticket Number:

 

[bmcpanel]

I finally figured this out.

Users who had spam assassin enabled were getting the 421 error and users who were not using spam assassin were not getting the error.

Thus, I figured out that Spam Assassin was the common denominator. It was not working properly, probably corrupted. Anyway, I fixed spam assassin and the customers stopped receiving 421 errors.

cPanel.net Support Ticket Number:

 

[doiz]

Can you tell me how you fixed spam assassin? I'm having the same issue and have no idea what to do.

 

[AbeFroman]

I forgot what I did, but I believe /etc/localdomains had the wrong hostname

 

[esp1]

Bmcpanel,

Could you inform us how you fix the spamassassin problem ?

We have look into /etc/localdomains and /etc/valiases,
the domains are there.

If we disable the spamassassin the problem is gone.

We are using cpanel 9.0.0 R25.

Thank you.

 

[bradleebaker]

Anyone??
We are also noticeing the same issue.....

 

[LP-Trel]

Bump, same problem here.

 

[bradleebaker]

Try that:

http://www.webhostingtalk.com/showthread.php?s=&threadid=204273&highlight=421+smtp

 

[dalbregio]

Bmcpanel or anyone else..

could someone post a reply on how you go about fixing this problem?

 

[makan]

Spam Assassin

Perhaps you need to disable your Spam Assassin.
It works for me

 

[bradleebaker]

Re: Spam Assassin

Originally posted by makan
Perhaps you need to disable your Spam Assassin.
It works for me

That is not a good resolution. Follow my link posted a few posts back. It works...

 

[esp1]

Log in as root and type this in your shell.

IPTABLES -A INPUT -i lo -s 0.0.0.0/0 -d 0.0.0.0/0 -j ACCEPT

That's will solve your problem.