After reading the following article I still fail to get NDR sent to postmaster http://technet.microsoft.com/en-us/library/bb400930(v=exchg.80) We already have an account called postmaster@mydomain.ie So I used the command Set-OrganizationConfig -MicrosoftExchangeRecipientReplyRecipient postmaster command runs successfully. To test this I send an email from an my own account to another email account that I know that mailbox is full. When I send and email from my own email account I get an NDR reply to my account as expected. However, when I login to postmaster account there is no NDR message ? Am I missing something ? Ray

Hiy all, I worked this out in the end. For anyone else with a similar issue, heres what I did. By default in ex2007 only the following DSN Codes are monitored 5.1.4, 5.2.0, 5.2.4, 5.4.4, 5.4.6, 5.4.8 When I checked the mailbox full message I received into my own email account it had 5.2.2 So I added this to the list of monitored codes and now when I test , postmaster account does receive the message. surely Mailbox full code should be monitored by default ? Any way procedure below if you want to add non default codes for monitoring. Ray --------------------------------------------------------------------------------------------------- Open the Exchange Management Console. In the console tree, click Organization Configuration, and then click Hub Transport. In the result pane, click the Global Settings tab. In the action pane, click the Properties link that is directly under Transport Settings. Click the Message Delivery tab. In the DSN area, do one of the following: To add a DSN code, enter the 3-digit DSN code as x.y.z, and then click Add.To edit an existing DSN code, select the DSN code, and then click Edit. Modify the DSN as necessary, and then press Enter.To remove an existing DSN code, select the DSN code, and then click . When you are finished, click OK.

Hiy all, I worked this out in the end. For anyone else with a similar issue, heres what I did. By default in ex2007 only the following DSN Codes are monitored 5.1.4, 5.2.0, 5.2.4, 5.4.4, 5.4.6, 5.4.8 When I checked the mailbox full message I received into my own email account it had 5.2.2 So I added this to the list of monitored codes and now when I test , postmaster account does receive the message. surely Mailbox full code should be monitored by default ? Any way procedure below if you want to add non default codes for monitoring. Ray --------------------------------------------------------------------------------------------------- Open the Exchange Management Console. In the console tree, click Organization Configuration, and then click Hub Transport. In the result pane, click the Global Settings tab. In the action pane, click the Properties link that is directly under Transport Settings. Click the Message Delivery tab. In the DSN area, do one of the following: To add a DSN code, enter the 3-digit DSN code as x.y.z, and then click Add.To edit an existing DSN code, select the DSN code, and then click Edit. Modify the DSN as necessary, and then press Enter.To remove an existing DSN code, select the DSN code, and then click . When you are finished, click OK.