Exchange 2013 - Meeting Invite from external contact is internally processed and received hundreds of times per day for one user
One of my users gets the same invite to attend a meeting hundreds of times a day. The invite was originally sent from an external contact (outside our Exchange 2013 / AD setup) and I can see that this external contact sent the request only once. The repetition is happening within our system, and the invite generated each time is identical to the last.
Somewhere within Exchange something is not right. This replication happens regardless of whether Outlook is open, and whether there are iOS devices turned on and syncing or not.
I've some vague high concept ideas what might be happening, but if anyone could give me technical specifics to carry out in PowerShell or the EAC to try and fix this, I'd be most appreciative!
Many thanks :-)
Somewhere within Exchange something is not right. This replication happens regardless of whether Outlook is open, and whether there are iOS devices turned on and syncing or not.
I've some vague high concept ideas what might be happening, but if anyone could give me technical specifics to carry out in PowerShell or the EAC to try and fix this, I'd be most appreciative!
Many thanks :-)
ASKER
Hi Simon.
Sorry, EE didn't tell me there was a message from you!
Had already tried what you've suggested when I posted, as read a lot of people saying iOS was a royal pain on this. We left it a good few hours with no ActiveSync engaged (account deleted) and the single iOS device the user has turned off. Still the repeated meeting invite messages came in.
Would you suggest we try it for a whole 24 hours, to see if it stops? Otherwise, I was going to delete and recreate the user mailbox (backup, PST export first).
Incidentally, the troubles began after a Veeam backup crashed out a load of our VMs. This does make we wonder if it is little to do with ActiveSync and more to do with some internal issue on Exchange.
Many thanks,
Bobby
Sorry, EE didn't tell me there was a message from you!
Had already tried what you've suggested when I posted, as read a lot of people saying iOS was a royal pain on this. We left it a good few hours with no ActiveSync engaged (account deleted) and the single iOS device the user has turned off. Still the repeated meeting invite messages came in.
Would you suggest we try it for a whole 24 hours, to see if it stops? Otherwise, I was going to delete and recreate the user mailbox (backup, PST export first).
Incidentally, the troubles began after a Veeam backup crashed out a load of our VMs. This does make we wonder if it is little to do with ActiveSync and more to do with some internal issue on Exchange.
Many thanks,
Bobby
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ASKER
Worked out on my own accord that the problem is with the Outlook client....
That would probably be the culprit. Calendar handling on iOS with ActiveSync is very poor and shouldn't be used (ie don't do anything with the calendar on the device at all).
It has probably looped and the messages are queued.
Going to be blunt here - wipe the iOS device and remove the ActiveSync partnership. Wait for the messages to flush out completely. Then resync.
All the time the iOS device is active or configured for the mailbox I wouldn't look anywhere else for the cause.
Simon.