You do not have sufficient permission to perform this operation on

[Guest]

We are in a Windows XP and MS Office 2003 client with a Server 2003 OS and
Exchange 2003 environment. A user that had been granted permissions to send
mail on behalf of another user received the Microsoft Office Outlook Notice
2003, "You do not have sufficient permission to perform this operation on
this object. See the folder contact or your system administrator." when they
tried to send mail on behalf of the user. The user that granted user
permissions used the method of the Outlook 2003 version "Delegate Permission"
and gave the user "EDITOR" permissions. Upon further investigation the
Grantor's Mailbox was checked from the PC and the Grantor had other users
through Exchange Administration granted right to the user mailbox of
"Publishing Author" permissions. In further testing the method of "Delegate
Permission" was removed from the Grantor's PC and the user method primarily
preformed by the Exchange Admin on the user mailbox and from the Grantor's PC
on the user's Outlook folders yielded the same results. Any solutions to this
issue of "Send Mail on behalf of another user†and the user the Grantee not
having enough permission will be greatly appreciated.)

 

[Guest]

I think you have to set the "Send on behalf" setting in the Active Directory
Users and Computers user account under Exchange General and Delivery Options.
You would add the user there. Hope this works.