John McCormick wrote: > ...ACM uses Listserv software. It has all the options mentioned by Rick > including restricting posting to subscribers of the list. ACM Support > folks recommend not using this restriction option. > > The major problem with restricting posting to subscribers is with e-mail > addresses. You can only post if your return address is identical to that > in the list's list of subscribers. For many people, that means it is not > possible to post from a different machine than the one they subscribed > from. ... The problem John notes is one with which I'm currently struggling; I can't delete the subscription to TEAM-ADA for my FORMER address because I made the mistake of subscribing using my ACM FORWARDING address (to ensure I wouldn't miss anything! 8~) -- David F. Harrison SIGAda '98 Publicity Chair (703) 560-2047 (R) (703) 760-0261 (W)