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Old 23rd February 2006, 09:50
Hans Hans is offline
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Exclamation SMTP-server seams tob e down within Postfix

My Debian server is located in a datacenter and the system ports for smtp, ssh, ftp, pop3, http are monitored.
When one of these processes is down, I will receive a sms on my mobile phone.
According my ISPConfig hosting-controlpanel everything is functioning fine.
And I do not have any problems with any of the running processes but …
everytime I receive a message from datacenter that my smtp is down.
Two minutes later or so, I receive a sms again that all running processes are running and that my server is fine. This happens again and again.

I have contacted the company in the datacenter, and they told me that when my smtp-server is not showing the initial greeting within 20 seconds, the monitoring system thinks that my smtp-server is down.

I think it has something to do with a setting within Postfix, I had a look at this problem, but it is not clear to me why this problem occurs.

Can anyone give me advise?

I would be very grateful.
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