I've managed to add another Mailbox as a 'Delegate' in Outlook 2010. However when I click on the From button I don't see the name of the Mailbox I want to send on behalf of, see pic below:

Instead I have to click on 'Other Email Addresses' and manually type in the Mailbox name. In Outlook 2007 you could just click on the name of the Mailbox you want send on behalf of in the drop down list. Anyone got any ideas for this? I'm using Exchange 2007.
EDIT: Found a fix: http://support.microsoft.com/kb/2593557 .... now to make that into a script and roll it out to 300 users

Instead I have to click on 'Other Email Addresses' and manually type in the Mailbox name. In Outlook 2007 you could just click on the name of the Mailbox you want send on behalf of in the drop down list. Anyone got any ideas for this? I'm using Exchange 2007.
EDIT: Found a fix: http://support.microsoft.com/kb/2593557 .... now to make that into a script and roll it out to 300 users
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