26 march 1995 Ottawa Canada Even though you deleted the subscriber, the system sending you the non delivery report (system trying to send to non existent system) may keep trying for anywhere from 1 to 10 days. This is a pain but about all you can do is write to the system that last received the message and ask its postmaster to please flush mail from your list destined for the problem address from his mail queue. I guess there is a command to do this but am not a postmaster so do not know for sure. I find my own list, blind-l seems to have some subscribers which are redistirbution lists and sometimes subscribers think they are signed onto the list directly but aren't. The rredistribution lists are not peers, just normal subscribers of my list. Generally I find it takes about a week from when I delete someone until the errors about mail being undeliverable to them end and by that time the user is writing to the list to ask why they aren't receiving mail. Sure keeps life interesting.