From owner-freebsd-questions@FreeBSD.ORG  Thu Dec 13 00:52:55 2007
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From: Chuck Swiger <cswiger@mac.com>
To: Cesar Amaya <csar@123.com.sv>
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Date: Wed, 12 Dec 2007 16:52:53 -0800
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Cc: "freebsd-questions@freebsd.org Questions" <freebsd-questions@freebsd.org>
Subject: Re: /tmp: filesystem full
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On Dec 12, 2007, at 2:19 PM, Jerry McAllister wrote:
> csar@123.com.sv wrote:
>> I even restarted the server but the problem is still there.
>> this is what I got every amount of time (not always).
>>
>> root     mail.local  8987    3 /tmp          4 -rw-------  =20
>> 616886272 rw
>>
>> I don=B4t understand why mail.local is gathering a file that big
>
> Apparently someone out there keeps trying to resend that awful
> huge mail file, so whenever you restart, it gets stuck in that
> same condition.  If you can track down the source of the file,
> either nuke it or block it.

You should add something like this to your sendmail.mc config:

   define(`confMAX_MESSAGE_SIZE', `21000000')dnl

...which will set a maximum message size that your SMTP server is =20
willing to accept.  The recommended max size in the RFCs was something =20=

like 10 MB, but season to taste.

--=20
-Chuck