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For following, I see over 180 entries:
Select * from exchangemailboxentry
where MbxArchivingState = '3'
For the event id, i have about 5 entries where the MbxArchiveState = 3. What does that mean?
Exact same error as original poster, (EV v11.0.1)
Event Number 3333
Application or service EV
This mailbox has duplicate entries in the directory and cannot be processed. LegacyDN: %1 DefaultVaultID: %2
But 5 mailboxes menetioned in Event ID were used from previous migration not any particular users.
They have MbxArchivingState = '3'.
If I run queries for all mailboxes with 3, there are 180+ rows.