MacTUG uses an on campus mailman mailing list to keep members informed between meeting and to post questions to the group.
The list is a private list, but open to technical staff at UW, to join the list go to https://lists.uwaterloo.ca/mailman/listinfo/mactug and fill in and submit a request to join.
To send email to the mailing list, address it to mactug@lists.uwaterloo.ca
Previous MacTUG emails can be viewed in the archives at http://lists.uwaterloo.ca/pipermail/mactug/