On Wednesday 3 September 97, at 11 h 21, the keyboard of Frank Evan
Perdicaro <frank(_at_)dsea(_dot_)com> wrote:
I am thinking of using procmail to verify the return address of
each incoming mail message. I could write a script that
procmail calls for each From line. If nslookup fails on the
return address, send the message directly to the trash can.
Great. You will decrease the amount of mail you'll receive. Specially
when dropping messages from sites which have a slow DNS or are far away.
(Repeat after me: DNS errors can be temporary.)