[Mailman-Users] anti-virus triggering on digests

Dragon dragon at crimson-dragon.com
Tue Sep 19 20:40:20 CEST 2006

Oops, sent my reply to only Ron when I meant to also send to the 
list. My apologies to Ron for him receiving this twice.

Ron Brogden wrote:
>Hello.  A list maintainer on a server I look after was reporting lost digests
>when sending to Shaw Cable addresses.  I received the following from the Shaw
>admins today on why this was occurring:
>Our AntiSpam
>software is experiencing difficulties when scanning some of your daily
>digests. The problem is that some of these digests are over 20 messages
>deep with headers. At this time, the only solution we can see is to
>change the format in which your digests are sent (to exclude the headers
>from each attached message).
>Please be aware that our AntiSpam implementation is one of the most
>popular in the world. As such, it is very likely that other ISPs are
>experiencing the same or similar difficulties.
>I am currently tracking down what anti-virus they are using on their end but
>this does bring up the issue of digest format and whether this is something
>unique to Mailman.
>Has anyone else hit this issue?  Is there any immediate solution other than
>trying to the lower digest size threshold so as to send out more often?
---------------- End original message. ---------------------

It sounds like they are not handling MIME format digests correctly.

It also sounds like they are trying to pass the buck.

You could try plain text digests but that is only a potential 
workaround and negates the benefits of MIME digests for your subscribers.


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