| About many connections in SMTP [message #12810] |
Thu, 10 May 2007 14:35  |
jbravo
Messages: 20
Registered: May 2006
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Junior Member |
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Sorry if this mail don't concerns to OVZ, but I need to discard
possibilities
-bash-3.00# uname -a
Linux exodo.colombiahosting.com.co 2.6.8-022stab078.14-smp #1 SMP Wed
Jul 19 16: 13:15 MSD 2006 i686 i686 i386 GNU/Linux
Im using Exim 4.60, that comes with DirectAdmin. I have
smtp_accept_max in 130 and sometimes Im getting this error: "421 Too
many concurrent SMTP connections; please try again later."
I used exiwhat and netstat and I determine that yahoo servers have many
incoming connections to my server. Triying to determine the problem I
used an sniffer, its an example:
SNIFFER OUTOUT
250 OK
250 Accepted
354 Enter message, ending with "." on a line by itself
250 OK id=1HlpNN-0000Rm-7w
QUIT
221 exodo.colombiahosting.com.co closing connection
14 FIN-WAIT-1 209.191.125.35:29978 > 66.128.49.69:smtp
14 TIME-WAIT 209.191.125.35:29978 > 66.128.49.69:smtp
14 RESET 209.191.125.35:29978 > 66.128.49.69:smtp
-bash-3.00# netstat -an | grep 209.191.125.35
tcp 0 0 66.128.49.69:25
209.191.125.35:27139 ESTABLISHED
tcp 0 0 66.128.49.69:25
209.191.125.35:39853 ESTABLISHED
-bash-3.00# exiwhat | grep 209.191.125.35
7549 handling incoming connection from web38404.mail.mud.yahoo.com
[209.191.125.35] id=1Hlow6-0001xl-It
23792 handling incoming connection from web38404.mail.mud.yahoo.com
[209.191.125.35] id=1HloZ6-0006Bk-UK
and 20 minutes later I do netstat again and I get the same info. Then
the connections never close
-bash-3.00# netstat -an | grep 209.191.125.35
tcp 0 0 66.128.49.69:25
209.191.125.35:27139 ESTABLISHED
tcp 0 0 66.128.49.69:25
209.191.125.35:39853 ESTABLISHED
I upgraded to exim 4.66 and I get the same problem.
I'll really thanks if you can help me!
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