> -----Original Message-----
> I have only been a user, never an Admin, of GroupWise and 
> Outlook, but I believe both have had the feature for a few years. 
> 
> Of course, it does not work on a listserv.
> 
> Is this an Exchange server 'feature,' the ability to recall 
> sent messages?
> I'm seeing more and more of these on lists these days, and am 
> curious...
> 

If the user is on an exchange environment, and the recipient has not
read the message yet, you can remove (an optionally replace) the
message.