Log Message:
(upstream) update 6.40 to 6.44
 6.44 2014-10-13 Generic regex now matches against the reverse dns PTR value
 6.43 2014-07-18 Allow broken SRS0+ rather than the correct SRS0= tag.
 6.42 2014-06-28 Never add auto-whitelist entries for outgoing mail from localhost.
 6.41 2014-03-21 Unique ip connection limits only apply to authenticated connections.