<P>My ISP has made it tough to send e-mails if the sender's e-mail address isn't the one registered with them.  I run a mailing list and would like to continue doing so, the problem of course is that I can't register all the senders' e-mail addresses at my ISP.  When an e-mail arrives from the list the FROM is: Mail Server @ me.com on behalf of <A href="mailto:sender@otherISP.com">sender@otherISP.com</A>  but the internal From address is just <A href="mailto:sender@otherISP.com">sender@otherISP.com</A>.  I would like to change it so that the FROM address is mail<A href="mailto:mailserver@me.com">server@me.com</A> and the reply-to is <A href="mailto:sender@otherISP.com">sender@otherISP.com</A> </P> <P>Is that something that's doable?  </P> <P>Thanks, Eric </P> <P>PS: I've written daemons for Mercury in the past and wouldn't mind doing it that way...</P>