Running Exchange 2007 SP2 and Outlook 2007 SP2. We have two forests, one for Messaging (Exchange) and one for standard user accounts, i.e. we're using linked mailboxes. Exchange forest is called Exchange, user account forest is called Domain. There is a CIO named Bill Gates. He wants his PA, Jenny Smith, to be able to recv and respond to meeting requests sent to him. In Bill's Outlook, we go to Delegates and add Jenny as a delegate so that she has Editor access on his Calendar. We tick the box saying "Delegate receives copies of meeting related messages sent to me" But when he tries to save, he gets the message: "The Delegates settings were not saved correctly. Unable to activate send-on-behalf-of list. You do not have sufficient permission to perform this operation on this object" We've also gone into Exchange Shell and run this command: Add-ADPermission -identity BillGates - user Domain\JennySmith -properties:publicDelegates -AccessRights:WriteProperty Stil same problem! Any ideas?

Tons of hits on Google for the error message "Unable to active send on behalf of list". This KB article looks promising. http://support.microsoft.com/kb/958443 Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Hi Yeh, been through a lot of them (manually adding Send on behalf etc)... With the article you mentioned, do you know if running outlook.exe /cleanfreebusy will cause any lack of functionality to his mailbox (e.g .lose rules, existing delegate info etc)? Secondly, I thought about running this command: Add-ADPermission -identity BillGates - user NT AUTHORITY\SELF -properties:publicDelegates -AccessRights:WriteProperty What do you think? Because it looks like he doesn't have the rights to add a delegate to his own mailbox? Is there anyway to check if the SELF account already has this permission?

Free/Busy information is generated from the calendar. Therefore the only impact is the short period while it is republished to the server. You shouldn't need to do anything with permissions, unless your permissions have been hacked around with. In many cases simply ensuring that inheritance is in place. Also don't forget that any permission changes you make on the server can take 2 hours to be fully active because of the way that Exchange caches permissions. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Hi Simon Ran cleanfreebusy but this didn't fix it :( Also noticed that the CIO cannot even remove existing delegates or add new ones, he always gets "The Delegates settings were not saved correctly. Unable to activate send-on-behalf-of list. You do not have sufficient permission to perform this operation on this object" coming up. Any ideas? Is it possible that he's missing some rights to perform actions on his own mailbox? SELF does have Full Mailbox access to his mailbox though.

Ok, managed to get it to work by running this command: Add-ADPermission -identity BillGates - user Domain\BillGates -properties:publicDelegates -AccessRights:WriteProperty No idea how though!! Can anyone explain?

Hi Elpaso1, It sounds odd, maybe some ad permission is missing for the user account. Glad to hear that the issue resolved! Regards! GavinPlease 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.