[Mailman-Users] Mailman is failing to send mails to a list cantaining more than 80 mail-ids
manthra.24 at gmail.com
Fri Jan 14 06:50:12 CET 2011
On Thu, Jan 13, 2011 at 10:28 PM, Mark Sapiro <mark at msapiro.net> wrote:
> Manthra wrote:
> >We have Mailman with Postfix (Virtual) running successfuly with small
> >mailing lists(i.e. Having less than just 80 mail-ids in the lists). But
> >the size of the mailinglist goes beyond 80 mail-ids, it is failing to send
> >We have tried setting up the option "Ceiling on acceptable number of
> >recipients for a posting"
> >to 400, but no use.
> This setting has no effect whatsoever on this issue. This setting will
> cause an incoming post to be held if the number of explicit To: and
> Cc: recipient addresses equals or exceeds that number. It has nothing
> to do with how a post is delivered.
> >We are getting the following error in the log file
> >/var/lib/mailman/logs/smtp-failure (only when list size crosses 80
> >Jan 13 11:47:18 2011 (27459) delivery to manthra.24 at gmail.com failed with
> >code -1: Server not connected
> >Same error for all the email-ids in the list
> Something is causing Postfix to disconnect when the recipient list for
> the mail exceeds 80 addresses. My best guess is that 25% of your list
> addresses are invalid and Postfix is doing recipient address
> verification and disconnecting with a 421 error after 20 invalid
> addresses. There is a bug in the Python SMTP library
> <http://bugs.python.org/issue5713> that can cause the above error when
> this occurs.
> Regardless of whether or not the above conjecture is correct, try
> SMTP_MAX_RCPTS = 20
> in mm_cfg.py and restarting Mailman. This will cause Mailman to deliver
> list mail to Postfix in separate transactions with no more than 20
> recipients each and should solve the problem.
Thank you very much.
You are right. List has more than 30 invalid Mail-IDs.
After inserting the line SMTP_MAX_RCPTS = 20 to mm_cfg.py , it is
Thank you very for this detailed information
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