Our default smtp is username@xxxxxxxxxxx <BLOCKED::mailto:username@xxxxxxxxxxx> and we have some users who are having an additional secondary address which is username@xxxxxxxxxxxxxx <BLOCKED::mailto:username@xxxxxxxxxxxxxx> . We have configured recipient policy to add @company.com as the primary address to user accounts . We would not want policy to add @oldaddress.com to users while still want the server to accept mail to oldaddress.com, to accomplish this we added the smtp address @oldaddress.com to the recipient policy while we did not chech the box next to it. We also configured the policy to be responsible to the @oldaddress.com by cheching the this exchange organization is responsible..... box The result was that when someone send email to usernama@xxxxxxxxxxxxxx <BLOCKED::mailto:usernama@xxxxxxxxxxxxxx> he gets the 550 5.7.1 Unable to relay for username@xxxxxxxxxxxxxx <BLOCKED::mailto:username@xxxxxxxxxxxxxx> . Please advise how to sort this out...? Regrds, Mahmoud