> A gentleman had set up an account for people to send suggestions to about
> something, and set up a script to autoreply with a form thank you letter
> whenever anyone sent a suggestion there.  Someone decided it would be
> amusing to sign up this robot account to my mailing list, and so
> OWNER-JAZZ-L started receiving an awful lot of thank you mail all of a
> sudden.  It's all straightened out now, and no real harm done, but he's
> concerned that whoever did it before may do it again.  He asked me if
> there was some way to keep that account from being subscribed to any
> lists.  I suspected the answer was no, but thought that it could do no
> harm posing the question to the other, more knowledgable folks at
> lstown-l.  Any suggestions?
 
Any of the postmasters for your LISTSERV can serve the address off.
Any mail from that address will then be intercepted and sent to
the LISTSERV postmasters, and the list owner, if it is addressed
to a list.