Exchange Utility error: "The underlying connection was closed: An unexpected error occurred on a receive"
説明
When trying to rehydrate mailboxes, the error "The underlying connection was closed: An unexpected error occurred on a receive" appears on the logs
原因
This may be caused due to firewall issues. In recent updates of "Palo Alto Content Threat Updates" was flagging Archive Manager rehydration as DDoS attack.
対策
Work with your network team to have this whitelisted