Last mail file. The response were from postmasters (or former postmaster) for a listserv. /duane ----------------------------Original message---------------------------- Just to interject my $.02 worth, I do approximately the same thing. I watch for repeat occurances of a given failure, after several repeats I do send test mail, and if that fails also, I remove the user. This holds true for BITNET sites, but I do things a bit differently for Internet sites. Depending on the error that is returned, I ignore it, especially if it pertains to any sort of mail/system failure. If it comes out with an unknown user error, I usually treat it the same way as the BITNET failure. Rich