[Mailman-Users] Preline fatal failure - broken pipe

[Russell Mann]

Mailman list,

I'm starting to see messages like this in great abundance:

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Hi. This is the qmail-send program at server.DOMAIN.org.
I tried to deliver a bounce message to this address, but the bounce bounced!

<DOMAIN_enews-bounces+condorito5=hotmail.com at lists.DOMAIN.org>:
TO ACCESS THE MAILING LIST SYSTEM: Start your web browser on
http://lists.DOMAIN.org/ That web page will help you subscribe or
unsubscribe, and will give you directions on how to post to each mailing
list.
preline: fatal: unable to copy input: broken pipe I'm not going to try
again; this message has been in the queue too long.

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My system is setup like this:

Qmail patched like a madman.
Vpopmail
The lists.* domains have a .qmail-default with:

|/var/qmail/bin/preline /usr/bin/python
/home/mailman/DOMAIN.org/qmail-to-mailman.py

Qmail-to-mailman.py is the Bruce Perens script.

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Any suggestions on where to start on this one?  I've googled, I've searched
the mailman list, and I still can't buy a clue.

Thanks,

Russell