-# Uncomment the following line to allow username masquerading. Any or all of
-# the three types of masquerading may be used (see mh-tailor(5) for details).
-#masquerade: draft_from mmailid username_extension
+# The following directive allows email address masquerading. The string
+# "draft_from mmailid username_extension" will allow all three types.
+masquerade: %masquerade%