If all of those messages were generated on 1 Apr, maybe it was a bad joke (seriously). Maybe the subscriber is no longer subscribed (one month ago). Maybe the subscriber is concealed (there are two). I did DIG on all of your non-concealed subscrbers' host addresses looking for MX sites that matched -- _I_ didn't find any (today). I also did a DISTRIBUTE MAIL DEBUG=YES, but that was useless in this case since most addresses are gatewayed from LISTSERV/SMTP at UKCC. Assuming that your problems are continuing (very possibly a bad assumption), I would do the following: Q HEALTHRE FOR *@*.CA (save this for future reference) then SET HEALTHRE SHORT FOR *@*.CA which will generate mail to all of those subscribers. In the future, your HEALTHRE bounces (if any) to them will contain their name/userid. When you find the errant user(s), SET HEALTHRE SHORTB FOR *@*.CA as appropriate (check your original Q HEALTHRE). Of course delete/set nom nof the "bad" userids and contact the host site. -- co-owner INFOSYS, TQM-L, CPARK-L, ERAPPA-L, JANITORS, LDBASE-L, et -L [log in to unmask] "Dept. of Deja Vu Dept." +1 814 863 1843 31 Shields Bldg. -- Penn State Univ -- University Park, PA 16802-1202 USA