Queued email is being delivered to the affected mailbox server now.

Rest assured that any legitimate emails sent to you during this incident would not have bounced or been lost - simply delayed. This is because of our multi layer architecture: External spam/virus servers handle initial receipt and if legitimate, forward to Zimbra MTA servers which in turn deliver to the appropriate host mbox server. In this case, all email was held on the Zimbra MTA servers during the problem with mbox3.

12:38 All clear update - all queued emails have been delivered. Please accept our apologies for the inconvenience caused.