I could assign send-as permissions using ADD-ADPermission -identity Admin -ExtendedRights "Send-As" -user domain\SenderGivenRights The above works fine in case of normal distribution group but does not in case of dynamic distribution group ? can i try SP3 ? Delivery has failed to these recipients or distribution lists: XYZ (xyzrecipeint@emetalsoft.com) You are not allowed to send this message because you are trying to send on behalf of another sender without permission to do so. Please verify that you are sending on behalf of the correct sender, or ask your system administrator to help you get the required permission. Diagnostic information for administrators: Generating server: /O=FIRST ORGANIZATION - TEST/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=Xyz #MSEXCH:MSExchangeIS:/DC=com/DC=Test:EXCHANGE2K7[578:0x000004DC:0x0000001D] #EX#

Hi Shahid, As you did not put any error message but I will suggest you to read below article I hope you will get done. http://technet.microsoft.com/en-us/library/dd421860%28EXCHG.80%29.aspx SP3 is not the solution of your problem also post some error if there is any. Regards. Shafaquat Ali.M.C.I.T.P Exchange 2007/2010, M.C.I.T.P Windows Server 2008, M.C.T.S OCS Server 2007 R2, URL: http://blog.WhatDoUC.net Phone: +923008210320

Thanx for your efforst but note that it does not help. I rather find it to be a bug. ( i've included the error statemnet as well )Shahid Roofi

Hi Shahid Roofi, Sure, I would suggest that you could update the exchange to exchange 2007 sp3 RU2. Some information for you: http://msexchangeteam.com/archive/2010/12/14/457194.aspx Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Yes updated to SP3 and also applied RU2. But not fixed!. I believe it's a simple and straight forward bug and very simple to reproduce and check in any environment. Shahid Roofi

Hi Shahid Roofi, Please check below information: http://social.technet.microsoft.com/Forums/en/exchangesvradmin/thread/f794902b-03fb-4225-be76-6a354e3a2695 Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Shahid, Any update? Thanks! Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Shahid, Any update for your issue? I have made a test with exchange 2007 sp3, and everything work well. My test like below: 1. create a ddg with name: testddg1 2. use add-adpermission -identity "testddg1" -user USERA -entendedrights "send as" to add the send as permission for USERA on the ddg 3. send a email using mailbox USERA on behalf of the DDG1, the email could be delivered successfully. If I misunderstand your issue, please tell me. Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.