I have installed MS Exchange .5.5, and i want to allow relay to internal mailbox, because y have users who prefer working with Outlook Express, and in this case I need to allow them do Relay; If I prohibit Relay, them', they couldn't sent message out of our domain. I'll really appreciate your help!!!! Thank !!! _________________________________________________________ Do You Yahoo!? Información de Estados Unidos y América Latina, en Yahoo! Noticias. Visítanos en http://noticias.espanol.yahoo.com