I am experiencing an odd error with SBS 2000 and email. I have approximately six different domains that I manage email for and all of them are working fine with the exception of one. All are configured identically (DNS entry, MX entry, recipient policy entry) but for some reason one of the domains is generating the following error every time the user tries to send or reply to an email. They can receive email without problems, they just can not send or reply. There is only one user in this email domain and they are able to ping the DNS entry for their domain. The user is on an XP system and has configured to use pop3 when connecting to our Exchange server. When they were configured to get email via the Exchange connection they were getting an error that the exchange server was not available. I have no ideas why they are getting this error.... Your message did not reach some or all of the intended recipients. Subject: RE: Review this file Sent: 5/8/2003 5:29 PM The following recipient(s) could not be reached: 'Brad Kxxxx' on 5/8/2003 5:29 PM 550 5.7.1 Unable to relay for brad@xxxxxxxxxxxxxxxx Thanks -Dave