[exim] Problem with many connections

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Author: José David Bravo Álvarez
Date:  
To: exim-users
Subject: [exim] Problem with many connections
Hi,

Well, 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'll really thanks if you can help me!

--
José David Bravo Álvarez
Gerente General
Colombia Hosting
Tel. (2) 6832660 ext. 120
Cel. (300) 6174073
Av. 4 # 48n43 Of. 301
http://www.colombiahosting.com.co