Quoting Noel Jones <njo...@megan.vbhcs.org>:
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
Call me a BOFH, but I have no sympathy for mail servers
that do not pass the FCRDNS test.
Robert
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