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From: Dan Busarow <dan@dpcsys.com>
Date: Tue, 5 Feb 2008 20:54:10 -0700
To: lachlan@lkla.org
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Cc: freebsd-questions@freebsd.org
Subject: Re: Memory Error using Mailman on FreeBSD. How to debug?
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On Feb 5, 2008, at 7:17 PM, Lachlan Michael wrote:

>
>> On Feb 5, 2008, at 4:17 AM, Lachlan Michael wrote:
>>
>>> I have a question about debugging a memory error on FreeBSD.
>>>
>>> When a user sends an e-mail with an attachment above about 500kB to
>>> a very
>>> small mailing list (4 members), Mailman on my server aborts  
>>> processing
>>> with the error
>>>  MemoryError :  out of memory
>>
>> [snip]
>>
>>> # limits
>>> Resource limits (current):
>>>   cputime          infinity secs
>>>   filesize         infinity kB
>>>   datasize           524288 kB
>>>   stacksize           65536 kB
>>>   coredumpsize     infinity kB
>>>   memoryuse        infinity kB
>>>   memorylocked     infinity kB
>>>   maxprocesses         5547
>>>   openfiles           11095
>>>   sbsize           infinity bytes
>>>   vmemoryuse       infinity kB
>>
>> Try running limits as the mailman user, not root.  All the mailman
>> programs run as your mailman user.
>
> Ok, but mailman is a nologin user. Should I change this temporarily  
> to check?
>
> # su mailman
> This account is currently not available.
>
> I'm not sure about the syntax but limits -U mailman doesn't seem to  
> make
> the user mailman, but just use the class default.
>
> # limits -U mailman
> Resource limits for class default:
>   cputime          infinity secs
>   filesize         infinity kB
>   datasize         infinity kB
>   stacksize        infinity kB
>   coredumpsize     infinity kB
>   memoryuse        infinity kB
>   memorylocked     infinity kB
>   maxprocesses     infinity
>   openfiles        infinity
>   sbsize           infinity bytes
>   vmemoryuse       infinity kB
>

Yes, change it so that you can su to mailman and then run limits  
again.  You need to see what happens in the context of user mailman  
since that is what all the mailman programs will get.

Dan