I have the following facts:
- Exchange Server 2003
- Different Outlook clients (2003, 2007, 2010)
- Windows 2003 domain
- Users are added to an account with 'send as' rights. (all people do have exactly the same rights on that account)
- Some of them can mail using the account's emailaddress as 'From'.
- Some of them cannot mail. They receive a non-delivery-report:
You do not have appropriate permissions to send e-mail to send to this recipient. For more information contact your system administrator
Any ideas on what is causing this?
Update: I also restarted the Exchange Information Store to reload the new account data from AD.