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Título
Exchange Utility error: "The underlying connection was closed: An unexpected error occurred on a receive" -
Descrição
When trying to rehydrate mailboxes, the error "The underlying connection was closed: An unexpected error occurred on a receive" appears on the logs -
Causa
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. -
Resolução
Work with your network team to have this whitelisted