I can't seem to find any info on mungedomain - the config option.
By setting this to yes does it just allow a user to subscribe to a list as:
and unsubscribe as: firstname.lastname@example.org
and vise versa?
In which case email@example.com and firstname.lastname@example.org are considered the same by
# mungedomain [bool] (no) <majordomo>
# If set to yes, a different method is used to determine a matching
# address. When set to yes, addresses of the form email@example.com
# are considered equivalent to addresses of the form firstname.lastname@example.org.
# This allows a user to subscribe to a list using the domain
# address rather than the address assigned to a particular machine
# in the domain. This keyword affects the interpretation of
# addresses for subscribe, unsubscribe, and all private options.
Internet Broadcasting System
http://www.ibsys.com (612) 896-9898