[Mailman-Users] Duplicate emails sent out

[David Casamento]

Hi,

I am having a problem with one of my mailing lists sending out up to 130 
copies of the mail same mail to each recipient. Other mailing lists on the 
same server have no problem at all and I have looked into the problem and 
can not see why it is happening.

One thing i have noticed is that in the logs/posts file, there are numerous 
entires like this.

Apr 26 13:00:07 2001 (2490) post to LISTNAME from SENDERSEMAIL, size=2642, 
failure=67
Apr 26 13:00:07 2001 (2490) post to LISTNAME from SENDERSEMAIL, size=2642, 
success
Apr 26 13:00:07 2001 (2490) post to LISTNAME from SENDERSEMAIL, size=2642, 
failure=2
Apr 26 13:00:07 2001 (2490) post to LISTNAME from SENDERSEMAIL, size=2642, 
success
Apr 26 13:00:07 2001 (2490) post to LISTNAME from SENDERSEMAIL, size=2642, 
failure=2
Apr 26 13:00:07 2001 (2490) post to LISTNAME from SENDERSEMAIL, size=2642, 
success
Apr 26 13:00:07 2001 (2490) post to LISTNAME from SENDERSEMAIL, size=2642, 
failure=2
Apr 26 13:00:07 2001 (2490) post to LISTNAME from SENDERSEMAIL, size=2642, 
success

I am not sure what this posts file actually means, and what these failures 
are. In the mailing lists that do send out correctly, there is not many 
entires in the post file, and the size of the list that works correctly is 
massive compared to the ones that fail.

Here is some output from the Defaults.py file

DELIVERY_MODULE = 'Sendmail'
SMTP_MAX_RCPTS = 100
MAX_DELIVERY_THREADS = 0

And we are using mailman-2.0.3

Thanks very much for any help you are able to give me.