I am running Exchange 2003 STd on Windows 2003 STD edition server. I created a distribution list earlier. Only specified users can send a e-mail using this DL to all users within the DL. The problem : Recently I noticed senders expand the DL and send the message to all users. And some users replying to the mail which goes to every1's mailbox. It's annoying. I sent e-mail to those users who send e-mail to the DL not to expand the DL. But..Assuming they just send e-mail using DL name , nobody can reply to the DL as rest users are not allowed. How ever users can manually expand the DL and send e-mail to all users in that DL. Any solution on this? I dont want users to be able to expand the DL . Thank you, Regards, Amey.

That is a very good question. Expanding DL's is a feature of Outlook so I don't think that you can do anything about that? Or maybe you can try to hide it from the addressbook Or hide group membership Deli

But look at this article if you want to hide group membership http://support.microsoft.com/kb/812841 Deli