03 May 2003, Suresh Ramasubramanian wrote:
SR> 2. HELO freemail (say yahoo.com) from an IP which does not have that
SR> freemail's rDNS is also a pretty sure sign of spam / virus mail.
What is the best way to realize it?
I can wrote condition for yahoo.com, for mail.com, etc. But I want to
maintain one list of freemail domains, so the following check should be
applied for each member of list:
if ($sender_helo_name == $member) and ($sender_host_name != .* + $member)
then reject it
(Check for forward and reverse DNS resolution is done always)
--
Alexey Y. Promokhov, system administrator
Joint Stock Venture "GP Telecom", Moscow, Russia
