Re: [exim] *sigh* luser issues..

On Wed, 06 Oct 2004 10:02:30 -0400 Brian wrote:

[skipping spam-scanning for certain recipients]

Please keep replies on-list, thanks.

> Tim Jackson wrote:
> > If so, and you want to "allow" based on destination address, it gets a
> > bit complicated due to the limitations of SMTP (you only get a chance
> > to reject based on message content once per *message*, not per
> > *recipient*).
> I am using exiscan, but I do like the idea of adding them to SA's
> whitelist_to.
> I will try that.
> I was hoping that I could do this in exim and then see if I could get it
> to skip calling SA altogether.. but guess not.

You *can* stop SA being called altogether from Exim, it's just that the
problem is that if there is a spam going to a "whitelisted" user, and
there are additional recipients of that message that haven't opted out of
spam scanning, then they will end up getting the spam too. But the same
applies if you use the SA whitelist_to option, because the fundamental
limitation is SMTP, not Exim or SA. That's why some people have come up
with the suggestion of temporarily deferring certain recipients in certain
circumstances, so that at SMTP DATA time you can apply the same decision
to the message as a whole, knowing that all recipients have the same
preferences.

It probably isn't a huge problem though. Spam these days seems to be
mostly single-recipient (per SMTP session, anyway), so it's likely that
the problem circumstance will arise relatively infrequently, especially if
you only have one recipient which is exempted from spam scanning.


Tim