[Mimedefang] Verizon and greylisting

[Joseph Brennan]

Jeff Rife <mimedefang at nabs.net> wrote:

> if ($Sender eq '<>')        # don't greylist here for DSN or callback
>   {
>   if ($#Recipients > 1)     # Can't have more than one with null sender


This is false.  Consider the case of a mailing list with more than
one list owner.  The bounce from <> (when a subscriber address goes
invalid) would be sent to more than one address.

Joseph Brennan
Lead Email Systems Engineer
Columbia University Information Technology