+2005-09-14:
+
+ The $smtp_envelope_from variable has been removed in favor of the
+ general $envelope_from_address.
+
+ The $envelope_from option has been renamed to $use_envelope_from.
+
+2005-09-07:
+
+ SASL 1.x support has been removed.
+
+ All patterns may be prefixed with = instead of ~ to enable
+ string search instead of regular expression match.
+
+ The $net_inc variables has been added.
+