On 10/19/2013 02:18 PM, Volker Braun wrote:
> REPLYTO_WITHOUT_TO_CC

A "To" header should be enough here.


> Second, reverse dns doesn't work. This nets us a RDNS_NONE penalty:
> 
> $ host trac.sagemath.org
> trac.sagemath.org is an alias for trac.sagedev.org.
> trac.sagedev.org has address 128.208.178.249
> $ host 128.208.178.249
> Host 249.178.208.128.in-addr.arpa. not found: 3(NXDOMAIN)
> 

To avoid another round trip -- this rule will still trigger unless the
name in the PTR record resolves to the IP address associated with the
PTR record:

  http://wiki.apache.org/spamassassin/Rules/RDNS_NONE

So, if there's a PTR record for 128.208.178.249 containing
'foo.example.com', then foo.example.com should resolve to (i.e. have an
'A' record for) 128.208.178.249.


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