On Wed, Apr 26, 2000 at 03:55:10PM +0100, Ian D Crorie wrote:
> Spam that goes to a few users we can live with, but I'd like to
> stop spam to dozens or hundreds of users at a time. What I want
> is to restrict access to certain aliases to senders from our local
> domain(s) only.
IMNSHO, spam should be stoped at all costs. No matter if it's one
message or 100000.
> Having been through the Exim Specification, I envisage a director
> just before our normal aliasfile ones. It will have verify_only
> set and then some test for a non-local sender (either using
> senders = !... or by testing the value of $sender_host_name).
> Then I'll do an lsearch of a file that will alias to :fail:
> those aliases that we only want local users to be able to send to.
> Because we have receiver_verify set this rejection will happen during
> the SMTP dialogue and I can set an appropriate failure message to
> go with the 550 fail code.
ICK! don't do that, your system will die.
A better way is to freeze messages with filter files -- assuming you pay
someone to check whether those are spam or not. So if your message has
more than 30 rcpts, then freeze it. etc...
> But maybe someone has done this already and wouldn't mind sharing
> their configuration file? Or can point out what I'm about to do
> wrong above?
Hope this helps.
--
Dr Yann Golanski Internet Systems Developer
PGP: www.kierun.org/pgp/key Mailmaster for the Planet Online
