On 8/19/2010 2:15 PM, p...@alt-ctrl-del.org wrote:
From: D G Teed Subject: How common is reverse DNS checking?
Out of all of the things we do to restrict spam,
the only one with a steady trickle of false positives is
the host lookup not passing reverse DNS check.
reject_unknown_client_hostname = gives problems
reject_unknown_reverse_client_hostname = 0 complaints here
Same here. reject_unknown_client_hostname is too strict, but
reject_unknown_reverse_client_hostname rejects lots of obvious
spambots without resorting to an RBL lookup. The
false-positive rate is close enough to zero that I would not
consider removing this restriction.
-- Noel Jones
