+TF/03 Bugzilla 615: When checking the local_parts router precondition
+ after a local_part_suffix or local_part_prefix option, Exim now
+ does not use the address's named list lookup cache, since this
+ contains cached lookups for the whole local part.
+
+NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
+ Robert Millan. Documentation is in experimental-spec.txt
+
+