Hello All, I am having a strange issue with my exchange environment. All exchange 2000. I have a users sending an email to a user that we know exists and will get the following error: Your message did not reach some or all of the intended recipients. Subject: Promotion Announcement Sent: 3/2/2006 8:29 AM The following recipient(s) could not be reached: 'IS' on 3/2/2006 8:29 AM The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address. <EXCHSTL2.scottrade.com #5.1.1> Any thoughts?