[Mimedefang] Message size limits to pass to SA

David F. Skoll dfs at roaringpenguin.com
Mon Nov 17 13:38:06 EST 2003

On Mon, 17 Nov 2003, Charles Gardner wrote:

> I have a low volume scanning gateway for myself and a few other domains.
> I've had a couple messages get through the gateway by having embedded
> images that push their sizes up.  I've customized my filter, but I left
> the default 100k cutoff for SA in place.  Now, I'm contemplating pushing
> that up to 1MB.


SA has non-linear time complexity, something like O(N^2) in my
experience.  A 1MB file will take ages to scan and likely cause
timeouts and many other problems.

I've never seen a spam more than 30kB, unless it was spam in an image,
and SA wouldn't catch that anyway.



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