Hello, I am trying to configure Exchange 2000 to host our email for the office. I have successfully setup the incoming portion (without really knowing how) but the outgoing does not work. I followed this tutorial: http://www.msexchange.org/tutorials/MF002.html and setup my Outlook with an account on our exchange server. When I send emails to that account (Trevor@xxxxxxxxxxx) I receive them, but if I try to send an email using that account, I get an error saying "The message could not be snet because one of the recipients was rejected by the server. Server Response: '550 5.7.1 Unable to relay for synapsee@xxxxxxxxxxx'. (Account: 'mail.ccmtees.com', SMTP Server: 'mail.ccmtees.com', Error Number: 0x900ccc79). Can anyone help me out? Thanks - Trevor