> -----Original Message-----
> From: Greg A. Woods [mailto:woods@most.weird.com]
> There is simply NO VALID EXCUSE for rejecting transactions
> with an empty return path when the sole recipient is the <postmaster>
mailbox.
There's also no valid excuse for sending mail with an empty return path to a
mailbox that is never used as an envelope sender. So I'd say it's pretty
much a wash.
Assuming postmaster doesn't send mail, any *legitimate* message to
postmaster would be from a real person, and so would have a valid return
address.