There is a user whose mailbox seems to receive 200 or so emails in the night.
The emails were sent during the day but he received those only at 10 PM. These
200 emails end up in the "deleted Items" folder instead of the inbox.
We have one frontend CAS server and 2 mailbox servers (1 active mailbox + 1 archive store).
I have analysed the message header of one of these messages and it seems the message creation time was 10:36 PM and message received 2 seconds later in the problem
mailbox.
There are no transport rules configured for the mailbox.
Desktop guys advise me that there are no outlook rules configured on users outlook either.
Desktop guys sent a test message tot he user and he received the message straight away.
And the email that i looked at was a internal email. So from one user to another user in the same organisation.
So it does not hi the front end CAS server.Please advise
what else can I check.