What is exiscan-acl

Adds content scanning to the exim4 ACL system. It supports the following scanning facilities:
MIME unpacking, sanity checking, file extension blocking
Antivirus using 3rd party scanners:
Sophie / Sophos
Kaspersky's kavdaemon
ClamAV via clamd
MKS AntiVirus
DRWeb AntiVirus
generic command line interface

Antispam using SpamAssassin
Regular expression match against headers and body

Author: Tom Kistner
http://duncanthrax.net/exiscan-acl/