On Wed, May 16, 2001 at 10:52:57AM +0200,
Frank Tegtmeyer <[EMAIL PROTECTED]> wrote:
>
> Additionally you will be the enemy of the admins who will get the
> double bounces instead. When a bounce is not deliverable it goes to
> an administrative account of the sending mailserver.
This is something that badmailfrom is good for. While blocking spammers
should be done by IP address, blocking messages that don't provide envelope
sender addresses that will accept bounce messages is best done by domain
name.
I am currently blocking myrealbox.com because they do this. I got some
double bounces from bad mailing list commands (instead of the person
who sent the bad commands) that pointed out the problem.