Am 28.01.2015 um 19:38 schrieb srach:
I have read the documents for some different Greylisting opportunities
for Postfix
This built into Postfix
http://www.postfix.org/SMTPD_POLICY_README.html#greylist
and popular ones
http://wiki.policyd.org
http://postgrey.schweikert.ch
I am not finding a modern comparison of these and a decision point for
choosing one to use best in the latest Postfix versions. Many online
postings have a comment but they are most for older versions of Postfix.
I wonder if Postfix with modern versions is integrating better ideas and
to do it all in one? I think maybe that the choice is not just the
recommended built in one of Postifx? It depends on the goals?
besides that greylisting is harmful in case of large sending clusters
not returning with the same IP while re-try a deferred message
postscreen can do this more or less as side effect with deep protool tests
postscreen_greet_action = enforce
postscreen_bare_newline_enable = no
postscreen_bare_newline_action = enforce
postscreen_pipelining_enable = no
postscreen_pipelining_action = enforce
postscreen_non_smtp_command_enable = no
postscreen_non_smtp_command_action = enforce
