Re: Postfix with Error: timeout exceeded

[Wietse Venema]

Nguyen Nang. Thang:
 After receiving EHLO command from one host running ASSP, another
 host running Postfix cannot continue to connect to ASSP to get
 more SMTP commands (the connection is disconnect
 ed). 
 
 Here is our system topology: 
 Internet - SMTP Proxy Server (ASSP) - SMTP Server (Zimbra) - Mail Server 
 (Zimbra) 
 
 Here is the content of /var/log/mail.log file: 
 Jun 28 09:55:33 mail postfix/smtpd[19834]: smtp_get: timeout 
 Jun 28 09:55:33 mail postfix/smtpd[19834]:  unknown[192.168.100.11]: 421 
 4.4.2 mail.test.com Error: timeout exceeded 
 Jun 28 09:55:33 mail postfix/smtpd[19834]: timeout after EHLO from 
 unknown[192.168.100.11] 

You need to look up the earlier logfile record for postfix/smtpd[19834].

That information will show how long Postfix has waited after receiving
the EHLO  command from ASSP.

Then, you know if Postfix times out too soon, or if ASSP is too
slow.

Wietse

Postfix with Error: timeout exceeded

[Nguyen Nang. Thang]

Hi everyone, 

I have deployed ASSP to improve Anti-Spam feature for our mail systems (running 
Zimbra). I have an issue related to SMTP connections between ASSP and Zimbra's 
Postfix. 

After receiving EHLO command from one host running ASSP, another host running 
Postfix cannot continue to connect to ASSP to get more SMTP commands (the 
connection is disconnect 
ed). 

Here is our system topology: 
Internet - SMTP Proxy Server (ASSP) - SMTP Server (Zimbra) - Mail Server 
(Zimbra) 

Here is the content of /var/log/mail.log file: 
Jun 28 09:55:33 mail postfix/smtpd[19834]: smtp_get: timeout 
Jun 28 09:55:33 mail postfix/smtpd[19834]:  unknown[192.168.100.11]: 421 4.4.2 
mail.test.com Error: timeout exceeded 
Jun 28 09:55:33 mail postfix/smtpd[19834]: match_hostname: unknown ~? 
127.0.0.0/8 
Jun 28 09:55:33 mail postfix/smtpd[19834]: match_hostaddr: 192.168.100.11 ~? 
127.0.0.0/8 
Jun 28 09:55:33 mail postfix/smtpd[19834]: match_hostname: unknown ~? 
192.168.100.0/24 
Jun 28 09:55:33 mail postfix/smtpd[19834]: match_hostaddr: 192.168.100.11 ~? 
192.168.100.0/24 
Jun 28 09:55:33 mail postfix/smtpd[19834]: timeout after EHLO from 
unknown[192.168.100.11] 
Jun 28 09:55:33 mail postfix/smtpd[19834]: abort all milters 
Jun 28 09:55:33 mail postfix/smtpd[19834]: milter8_abort: abort milter 
inet:127.0.0.1:8092 
Jun 28 09:55:33 mail postfix/smtpd[19834]: disconnect event to all milters 
Jun 28 09:55:33 mail postfix/smtpd[19834]: milter8_disc_event: quit milter 
inet:127.0.0.1:8092 
Jun 28 09:55:33 mail postfix/smtpd[19834]: disconnect from 
unknown[192.168.100.11] 

P.S. I researched another cases to test SMTP connections between ASSP and 
Postfix/Sendmail, they worked perfectly. 

Thanks for your help. 

Regards, 
N. Thang