[Mailman-Users] Mailman Borks on Large Attachments

[Lachlan Michael]

> Lachlan Michael wrote:
>>
>>One more data point. An attachment of 500-600kB was ok, but an attachment
>>of 1.5MB was not.
>>
>>For the 1.5MB file case, the memory errors just kept coming until the
>> .bak
>>file was left in place, and not moved away. Does this point to the mail
>>just being too big for python?
>
>
> No. This is really the same underlying problem. It is just manifesting
> itself in an unanticipated way in the 1.5MB case. I will fix this,
> probably later today, and send a revised Switchboard.py.

Thank-you. I received the file off-list. The newer Switchboard.py works a
treat, and with a 2.3MB attachment got the following result (good)

Feb 07 12:27:41 2008 qrunner(36243): Traceback (most recent call last):
Feb 07 12:27:41 2008 qrunner(36243):   File
"/usr/local/mailman/bin/qrunner", line 278, in <module>
Feb 07 12:27:41 2008 qrunner(36243):      main()
Feb 07 12:27:41 2008 qrunner(36243):   File
"/usr/local/mailman/bin/qrunner", line 238, in main
Feb 07 12:27:41 2008 qrunner(36243):      qrunner.run()
Feb 07 12:27:41 2008 qrunner(36243):   File
"/usr/local/mailman/Mailman/Queue/Runner.py", line 71, in run
Feb 07 12:27:41 2008 qrunner(36243):      filecnt = self._oneloop()
Feb 07 12:27:41 2008 qrunner(36243):   File
"/usr/local/mailman/Mailman/Queue/Runner.py", line 100, in _oneloop
Feb 07 12:27:41 2008 qrunner(36243):      msg, msgdata =
self._switchboard.dequeue(filebase)
Feb 07 12:27:41 2008 qrunner(36243):   File
"/usr/local/mailman/Mailman/Queue/Switchboard.py", line 160, in dequeue
Feb 07 12:27:41 2008 qrunner(36243):      msg = cPickle.load(fp)
Feb 07 12:27:41 2008 qrunner(36243): MemoryError
Feb 07 12:27:41 2008 (36976) Unpickling .bak exception:
preserving file: 1202354860.860585+e4058698929b53b32944a60dbc3b8bad171e3028

> I am sorry for your difficulties, but I really appreciate your help in
> getting the Mailman side of this fixed.

No problem. Certainly these fixes, while not a complete solution for me,
have mitigated the pain somewhat. Also I have now installed the daily
script that was mentioned in the list a few days ago, to receive a report
about the status of Mailman/errors/number of sent messages etc and this
will be helpful too.

> Ultimately, you will need to fix the underlying issue. I don't know how
> to do that, but these errors should not be happening. In most
> installations, Mailman can handle messages of tens of megabytes withot
> this problem.

At the moment it is a case of trying one thing at a time.

Thanks again for your prompt help and excellent program!