Dear Support,When sending local emails to receipents within the Global Address List, we keep getting the following errors bouncing back as follows: From: System AdministratorSent: Monday, 18 June 2007 16:42To: XXXXXSubject: Undeliverable: test Your message did not reach some or all of the intended recipients. Subject: test Sent: 18/06/07 16:42 The following recipient(s) could not be reached: 'XXXXX' on 18/06/07 16:42 The message could not be delivered because the recipient's destination email system is unknown or invalid. Please check the address and try again, or contact your system administrator to verify connectivity to the email system of the recipient. <myserver-fs1.mydomain.local #5.1.2> Just rebuilt our server Windows SBS 2003 Standard with SP2, Exchange 2003 has SP2 installed also, 10 users.Mailbox accountswere created utilising Exmerge.All internal users are experiencing the same problem intermittently when sending emails to each other.There are no errors being logged within the event viewer, under application or system.Can someone shed some light on howto reslove this problem?

Plese check if your user accounts have valid e-mail address - since you rebuild your server, maybe the domain part is wrong? Robert