Steve Ingraham <singraham@okcca.net> wrote:
> I need help with a problem. Our users are seeing some multiple
> duplicate emails coming from the same sender. This is not occurring
> with every email so there does not seem to be any pattern to which
> incoming emails will be duplicated and which ones won't. They are also
> reporting that duplicate emails are sent when they send to an outside
> email.
That might tend to indicate that qmail is starting a delivery of a message but
is being interrupted before the delivery is complete. It can also be a sign
that your queue directory structure has been corrupted.
The qmail-send logs are the usual way to track down a problem like this. Take
a message you know to have suffered this multiple deliveries problem, and then
find out (from the qmail-send logs) at what point the duplication occurred:
-before it got to your server -- i.e., the duplication occurred on another
machine, and both copies were delivered to your server properly.
-while on your server -- qmail made multiple mostly-successful deliveries of
the message, but was unable to declare the message successfully delivered,
so it had to try again.
Charles
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Charles Cazabon <qmail@discworld.dyndns.org>
Read
http://pyropus.ca/personal/writings/12-steps-to-qmail-list-bliss.html My services include qmail consulting. See
http://pyropus.ca/ for details.
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