Hi everyone. I have quite an odd problem at my company hoping I can get some help.
Theres an assistant who has full access to a few other peoples calendars. When this person wanted to send a message to the meeting members, let's say to cancel it. So she goes to cancel it, but changes the sender of the cancel email from the person who got the meeting request to herself, so that she gets the replies to reschedule.
But gets an error "You do not have permission to send the message on behalf of specified user"..which is mind boggling cause shes trying to send as herself. The best part is if she leaves the sender as the person who got the meeting request, it sends with a "on behalf of"
As far as i can tell, no permissions changed, it just started happening. This is in Outlook 2010.
It's probably an Exchange 07 issue. There are known issues with people who share too many calendars under 07 - the more shared calendars, the more flaky & random the errors become.
We actually solved a lot of these issues when we upgraded to Exchange 2010. Outlook version (2007 vs 2010) doesn't seem to make a difference for these issues.
If upgrading to Exchange 2010 isn't a possibility, at a minimum make sure the Exchange 2007 server is fully patched with all of the latest updates.
thanks for the info! So you recommend simply closing the calendars in outlook or removing the permissions for others as well to trim down the amount of shared calendars? Exchange 2010 upgrade isnt in the pipeline.
Yes, just have her close any calendars she doesn't need within Outlook - no need to even remove permissions. It seems that the more calendars are open, the worse the problem gets. If she has just a couple open (hers & maybe one or two others) it should be pretty stable. We stared seeing this issue when people had 4-5 calendars open at once (also admin assistants), and it got worse as they opened more.
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