On Fri, May 24, 2002 at 10:01:15AM +0100, Nigel Metheringham wrote:
> > You'd have thought the least a header regexp would do is bind to the
> > start of the line!
>
> The problem with the exim filter stuff is it was never designed to be
> able to do this and it *can't* bind to start of line (the string its
> matching against is a concaternated set of lines from the message -
> without newlines).
By the way, I'd like to publicly thank Nigel for this, and his other work
that we benefit from daily.
> Its lame, I no longer use it much myself (theres a couple of places its
> not been removed from) even though I wrote the thing, but its cheap
> (money and MTA resources) and suprisingly effective against things like
Yeah, I am aware it's not perfect, it's just a fairly good (IMO) stopgap.
We've discussed this on the exim list, better solutions are exiscan and
friends.
I just don't believe in full virus checkers: they eat way too many
resources, they're reactive for the most part (not proactive), and I don't
want any of those files to go through in the first place, so no need to scan
them.
I haven't looked too hard yet (busy with modifying SA to fix RBL DUL checks,
and parallelize/put a bound on DNS RBL checks), but something lightweight
that does proper mime analysis and rejects types and attachements just like
what your system filter tries to do, is really all I need. Maybe exiscan can
do that, I have to check.
(I don't much care for stripping attachments or modifying the body.
Bouncing, preferably at SMTP time, is plenty)
Marc
--
Microsoft is to operating systems & security ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ | Finger [EMAIL PROTECTED] for PGP key
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