[exim] Content routing?

Is it possible to do routing on content in the mail?

Lets say I want an redirect-router which can handle a mail as below, and
do an lsearch of the DTMF/DID: XXX field. And pass the mail on, with
attachments and all?

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INCOMING FAX REPORT
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Status: received
Date/Time: 2/18/2005 12:38:55 PM
Speed: 14400 bps
Connection time: 00:37
Pages: 2
Resolution: fine
Remote ID: FAX Gateway SUNET
Line number: 0
DTMF/DID: 423
Description: Fax received from FAX Gateway SUNET

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