Hi all, After migrating users from Exchange 2010 forest, the migrated user can not send messages. The error I get is permission for sending smtp Exchange 2010 does not have 5.7.1 Client permissions to send sender As This thank you very much Microsoft Certified IT Professional Server Administrator

Hi Check these thread to see if they are working with your issue http://social.technet.microsoft.com/forums/en-US/exchangesvrsecuremessaginglegacy/thread/5062cc65-0d4b-4b12-ab42-d12b8608d5e3/ http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/e763de97-88a1-494d-9841-4f3a466b5604 CheersZi Feng TechNet Community Support

Thanks for answering Zi, I have seen what my problem is, users have not migrated to Exchange users AUTHORITY \ SELF as "send as" I try to give these permissions but I get this error: Add-ADPermission <mailbox>-User-Identity 'NT AUTHORITY \ SELF'-ExtendedRights 'Send-as' Active Directory operation failed on xxxxxxxxx. This mistake is not retriable. Additional information: Access is denied. Active directory response: 00000005: SecErr: DSID-031521D0, problem 4003 (INSUFF_ACCESS_RIGHTS), data 0 Users who have not migrated the mailbox does not have this problem. How I can fix it?Microsoft Certified IT Professional Server Administrator

Hi For the error you listed, try the workaround on this KB http://support.microsoft.com/kb/2579075 CheersZi Feng TechNet Community Support

Hi For the error you listed, try the workaround on this KB http://support.microsoft.com/kb/2579075 CheersZi Feng TechNet Community Support

Thanks Zi, what I've done is to apply the inheritance of permissions in AD for users that give me problems, under Security -> Advanced and marched the inherit permissions checkbox. With this, users can work with EAS prefectamente regardsMicrosoft Certified IT Professional Server Administrator

Thanks Zi, what I've done is to apply the inheritance of permissions in AD for users that give me problems, under Security -> Advanced and marched the inherit permissions checkbox. With this, users can work with EAS prefectamente regardsMicrosoft Certified IT Professional Server Administrator