You'll want to look into the receiver_verify and sender_verify options,
which should help prevent such mail from entering your system to begin
with
On Tue, 20 Nov 2001, I. Forbes wrote:
> Hello All
>
> We always seem to have a collection of frozen messages sitting on
> our mail queue with return addresses like
> "spammer123@???" (or others that would not get through
> a decency filter ...). Our setup keeps these on the queue for a few
> days and then deletes them. Often there are multiple messages
> from the same address. Obviously for every message that gets
> stuck, there are many more that get through to clog up our users
> mailboxes.
>
> I was wondering is it possible to setup something that scans the
> mail queue periodically and adds the return addresses of any
> frozen messages to a "sender_reject" list. Obviously this could be
> done independently of exim, with the aid of a python or perl script.
>
> - Has anybody tried anything like this?
>
> - Is this a function which could/should be incorporated into exim
> itself?
>
> If a sender is trying to send e-mail and his return address is invalid,
> as demonstrated by frozen bounce messages addressed to that
> address, surely it is a valid response to deny further mail from that
> sender.
>
> Any comments?
>
>
> Ian
>
> ---------------------------------------------------------------------
> Ian Forbes ZSD
> http://www.zsd.co.za
> Office: +27 21 683-1388 Fax: +27 21 674-1106
> Snail Mail: P.O. Box 46827, Glosderry, 7702, South Africa
> ---------------------------------------------------------------------
>
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