Maximum Attachment Size

Julian Field MailScanner at
Sat May 27 14:01:26 IST 2006

José Ferradeira wrote:
> Scott Silva wrote:
>> José Ferradeira spake the following on 5/26/2006 4:30 AM:
>>> Hi,
>>> I'm trying to implement this rule set  in rules/MaxAttachSize.rules:
>>> To:      user1 at      614400
>>> To:       user2 at        -1
>>> Limiting the size of the attach file to 600MB to user 1 and free user2.
>>> Everything is working, except when I send a 800MB attach file this way:
>>> To: user1 at
>>> Cc: user2 at
>>> Both of users are not able to receive the email, but user2 should 
>>> recive
>>> the email and the attach file, right?
>>> MailScanner version 4.47.4
>>> Best regards
>>> Jose
>> AFAIR only if your MTA splits the messages. Otherwise, it doesn't 
>> seem to work
> Hi,
> Thanks.
> I'm using MailScanner with sendmail (fedora core 4).
> Can I do it with sendmail? 
Yes, I believe it is described in the Wiki. If not, please can someone 
(Steve S perhaps?) add it as quite a few of you know the answer to this.

It happens as MailScanner does not split up messages so one recipient 
gets one response and a different recipient gets another. This 
restriction rarely causes a problem and enables MailScanner to go a lot 
faster. It's a design decision I made a long time ago, and it rarely 
cause a problem that cannot be easily worked around, such as your case 
(look up "queue groups" in sendmail).

Julian Field
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