MessageHello everyone, Thanks in advance for any help. Situation: Windows 2000 AD domain with a central Exchange server. Stand alone server that is not on the domain that is using third-party email application. We want to keep the machine off the network, but be able to send email through it, as a normal email users, and through ASP & PHP applications running off of it. I added the relay settings to our Exchange server without success....still coming up with a 5.7.1 Relay Block... Thanks. Keith Duemling kduemling@xxxxxxx