Auteur: Jan-Peter Koopmann Datum: Aan: Kjetil Torgrim Homme, Exim User's Mailing List CC: Onderwerp: RE: [exim] Is there and logical reason to reject mail from: <> ?
Hi,
> > About the only time it's ever valid to reject a message
> with an empty
> > return path is when there's more than one recipient
> specified. It's
> > impossible, by design, for there to ever by more than one recipient
> > when the recipient has been specified from another envelope
> return addr.
>
> this is patently false. the RFC states how this can happen,
> and the issue has been brought up on this list before. for
> your home system, it may be appropriate to reject them, but
> "by design", this _will_ happen.
> on our system with 70k users, it happens quite often.
I must have missed this part. How exactly can this happen?
