Mitch Rerek wrote, in part: > I wanted to make sure that the 'from' field was null so that > the recipients wouldn't be able to see the sender's address > and respond to them. If this is an announcement list where one or a very few post, then simply dream up an appropriate (valid, at least in syntax) "From:" address, use it, and configure the list to accept the address or accept the address for review. For example, if one of my list owners wanted to do this, I might suggest they send their posts "From:" the address "[log in to unmask]". That address happens to be a black hole, but the address you choose could be undefined, I suppose. But then I'm of the opinion that if one can't reply to a piece of e-mail, it shouldn't have been sent in the first place. Just MHO. :-) If this is a discussion list, perhaps e-mail is not the appropriate vehicle?