[Mailman-Users] Mailman is failing to send mails to a list cantaining more than 80 mail-ids

[Manthra]

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
> if
> >the size of the mailinglist goes beyond 80 mail-ids, it is failing to send
> >mails.
> >
> >We have  tried setting up  the option "Ceiling on acceptable number of
> >recipients for a posting"
> ><
> http://ex1.com/cgi-bin/mailman/admin/list10/?VARHELP=privacy/recipient/max_num_recipients
> >
> >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
> >email-ids)
> >
> >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
> setting
>
> 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
working normally.
   Thank you very for this detailed information


>