I wasn't going to say anything on this but, as other techniques seem not to have worked I'll tell you what I do in such situations. I do several scans, various permutations, perhaps an nslookup or a whois. With the listserv scans I can usually narrow it down to a few possibilites, then maybe I do the whois or nslookup. Then, I send a personal note, not using listserv, explaining the problem to possibly suspicious addresses which may be related. Nine times out of ten I get, direct to me, a bounce which traces back to the offending address through a subscribed address. The innocent send me a note "not me" (I get to see their email header, maybe they're wrong, just forgot about that). If that fails I do more serious checking. I have yet to find one I could not track down, though some take a lot more time and work than others. Douglas