The term "served out" in this context means LISTSERV has given up on the address in question after receiving numerous invalid commands. It either means the person at the indicated address is confused and doesn't understand how to send the right commands to LISTSERV, or that the mail system on his/her site is sending back a delivery error to LISTSERV each time LISTSERV responds to his/her mail. Since such exchanges can result in infinite loops, LISTSERV simply ignores mail from an address after it's received a bunch of bad commands. If you think it's just a confused user, then you can have the LISTSERV postmaster issue the command, serve user@node on to restore their LISTSERV access. -jj