Date:  Thu, 14 Sep 2006 15:56:36 +0200
From:  "Juergen" <OpencubeMailingliste (at mark) weber-ebusiness.de>
Subject:  [coba-e:06931] Re: Slow SMTP answer on port 25 after lastest updates
To:  coba-e (at mark) bluequartz.org
Message-Id:  <20060914135202.M71073 (at mark) weber-ebusiness.de>
X-Mail-Count: 06931

Hi Michael,

>> Unfortunetely, on the 2 old servers the response time of Sendmail now is
>> awfully slow. It takes about 1 minute to get the SMTP greeting message on
>> port 25. On the v 4.5 server it only takes one second.
>>
>> The other services (ftp, ssh etc.) are very fast on al three servers.
>>
>> I have no idea what it could be...

> Sounds like that server has problems resolving DNS. Check that it is using 
> Valid and working DNS servers in "System Settings" / "TCP/IP" / "DNS 
> Servers".

You´re right. It was a DNS problem which was caused by the built-in basic 
firewall in the admin GUI. Port 53 TCP and UDP were open but it still did 
not work. I had to disable the entire basic firewall in the GUI. Now 
everything is ok.

Do you have an idea why I get these problem after the update? Before the 
update everything was working correctly. I just entered YUM UPDATE.

Juergen