During mail sync for a large mailbox with archive, the following error is observed during migration of the archive mailbox:
"Migration failed due to Target Mailbox Quota Exceeded",mail000002,""
“Upload Message Exception: ShutoffQuotaExceeded The operation failed because it would have exceeded the mailbox's shutoff quota.”
This error occurs because the mailbox has exceeded the default size limit for the archive mailbox in O365, set by Microsoft.
Client should consider reducing the archive mailbox size or request the quota to be extended by opening a support case with Microsoft O365 support.
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