On Fri, 2004-04-16 at 07:55 +0530, Suresh Ramasubramanian wrote:
> [4/15/2004 11:04 PM] Brian :
>
> > I'm currently using a program called 'messagewall' (found at
> > messagewall.org) as an smtp proxy.
>
> It has one dumb and rfc incompliant feature (accepting only one email
> per smtp session and 4xxing further rcpt tos) that prevent me from
> recommending it.
>
Well, I've never used messagewall, but I'm pretty sure I know _why_ it
does that (although I'm not sure it's RFC incompliant); more to the
point, exiscan may not be any better for your needs than messagewall.
Once the DATA stage of the SMTP conversation starts, the server can
either accept or reject the message - _for all addresses listed in the
RCPT stage_; there's no way for the protocol to handle "OK for user1,
REJECT for user2", etc.
So that means you either need to have the same rules apply to all users
(e.g., reject all spam with a score greater than 10), or you need to
force the sender to send to only one user as a time, using the method
that messagewall does. This applies equally to exiscan - see
http://duncanthrax.net/exiscan-acl/exiscan-acl-examples.txt, section 6,
"Having multiple content scanning profiles for several users or
domains." (that said, you can still generate bounces later in the
process, but that defeats the loveliness of SMTP-scanning).
HTH,
-b
> srs
>
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>
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