[Mimedefang] Sendmail::Milter

David F. Skoll dfs at roaringpenguin.com
Tue Nov 24 15:48:46 EST 2009

Michiel Brandenburg wrote:

> What might be a nice tradeoff is using the socket map feature of
> sendmail to hook sendmail into mimedefang that way.  Dunno how that
> would impact performance but it might be a nice tradeoff.

Performance impact is severe.  We used the sockemap -> MIMEDefang
path in an older version of our commercial software, but we had
to remove it and use a different technique because of the horrible

> As I recall the socket map protocol is pretty lightweight but might
> still be too slow, in my case it works fine even with about 1/2 mails
> per sec.

We tend to concentrate our optimizations on medium-sized
installations, by which I mean about 25 msgs/second (= about 2
million/day) or higher.  The low-end ones aren't worth worrying about
just because the load is easily managed.



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