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Problems with SMTP

To: qmail@list.cr.yp.to
Subject: Problems with SMTP
From: Jason King <jking@informs.com>
Date: Thu, 14 Dec 2006 10:55:50 -0600
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I have several issues on my mail server.

The first issue is that several users are getting multiple copies of the same email. I have checked the logs and a single user sending a single email shows up twice in the logs.


The second issue is that the logs are showing alot of "CNAME lookup failed temporarily" errors in the log files. This apparently causes the SMTP service to stop responding for a moment. The apparently also affects the IMAP service because the IMAP service will stop responding to requests too.

Any ideas would be appreciated.

Jason


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