> I know that subdomains may begin >with a digit now but I don't see anything to make the underscore legal. >The definitions talk about ldh-str (letter digit hyphen). If it were ldhu-str (letter digit hyphen underscore) then it would be legal :-) RFC1035 contains the definition of DNS names. Looks like FAL is perfectly justified in what it's doing. ---------- Mark J Strawcutter BitNet: MJSTRAW@IUP Director, Systems and Communications DNS (mx): [log in to unmask] Indiana University of Pennsylvania Voice: (412) 357-4000 Indiana, PA 15705 "you can't nail jello to a tree"