Re: [Exim] Bouncing large unzipped attachments

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Author: Nigel Metheringham
Date:  
To: Ray Bellis
CC: exim-users
Subject: Re: [Exim] Bouncing large unzipped attachments
rpb@??? said:
> One of our customers using Exim wants to encourage their users to make
> sensible use of network bandwidth by requiring them to compress any
> attachment above 1 MB.


In general I would say its dangerous to tamper with the content in this
way. Far better to bounce the message and make the originator fix the
problem.

> I believed I would be able to do this with a system filter which
> spawns an external Perl program as a pipe. The Perl program would use
> the MIME::Tools library to read the message, and return an error
> message and non-zero status code on failure.


You cannot play with the message content in a system filter - it should
be done as a transport filter.

    Nigel.


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[ Nigel Metheringham                  Nigel.Metheringham@??? ]
[ Phone: +44 1423 850000                         Fax +44 1423 858866 ]