>The problem is not with LISTSERV, but with the mailers you are dealing >with. What matters is the numeric codes, rather than the English message. >There are codes for permanent and temporary errors, and there are mailers >that use temporary codes for permanent errors, and vice-versa. > > Eric Eric: Is there any way to keep LISTSERV from deleting people with "host unknown" problems --whatever the numeric code may be? ..Chris..