Re: [exim] Mailing list trouble

On 9 Apr 2011, at 21:27, David Woodhouse wrote:

> On Sat, 2011-04-09 at 19:37 +0000, W B Hacker wrote:
>> It is possible - even probable - that the 'mailing list' that the OP has
>> set up DOES operate in such a manner as to (appear to) 'forge' an
>> Envelope-From.
>
> Or, in other words, it just uses the original Envelope-From on the
> message, and forwards to its final destination(s) without mangling it in
> any way.
>
> To use the word 'forge', or 'forgery', for such a long-established
> behaviour is a new trend which has never really had any basis in common
> sense.

Well, except that the unauthenticated use of originator IDs is precisely what makes it so hard to deal with abuse. The practice needs to be discouraged at every turn. The OP should rewrite the return-path into a domain that he controls. Perhaps using SRS.

--
Ian Eiloart
Postmaster, University of Sussex
+44 (0) 1273 87-3148