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postfix-users: Re: Repeating e-mails

Re: Repeating e-mails

From: Wietse Venema <wietse_at_nospam>
Date: Mon Apr 26 2010 - 12:29:05 GMT
To: The Doctor <doctor@doctor.nl2k.ab.ca>

The Doctor:
> Question has anyone in postfix and / or amavis ever seen
> repeating e-amils with binary attachments to them?

You have an SMTP-based filter that takes two minutes to process a
5MB message. See my logfile analysis of a few days ago.

This causes the sender (into the filter) to time out. As per the
SMTP protocol, this is a "temporary" error condition.

The SMTP protocol requires that senders retry delivery after a
"temporary" error, until the message expires in the queue.

        Wietse