Thursday, December 17, 2009

Exchange 2010 Migration - Part 4

Since my mailbox been migrated to the Exchange 2010 mailbox, I wasn't been able to receive my voicemail through my Outlook

Existing Environment:
1 x Exchange 2007 SP2 (Mailbox)
1 x Exchange 2010 (CAS, Hub and UM)
1 x Exchange 2010 (Mailbox)

Part 4 - UM and Hub Transport Issue

The following error occurred on my UM/Hub Transport server:

The Unified Messaging server failed to submit a message to Hub Transport server 'Hub01' due to the following error: Unexpected SMTP server response. Expected: 220, actual: 500, whole response: 500 5.3.3 Unrecognized command

According to some forums, this occurs because the communication between the UM and Hub Transport server is using TLS and I don't have a valid SSL certificate.

To fix this, either buy a valid certificate and assign it to the UM and SMTP service or do the following:
  • Find the Receive Connector (within Server Configuration - Hub Transport) that most likely to be used by the UM to communicate with the Hub Transport. Usually it will use the more specific network addresses from the network tab of its properties
  • On the Authentication tab, untick all TLS related options. Make sure Exchange Server authentication is selected
  • On the Permission Groups tab, make sure Exchange servers is selected
  • Restart Transport and UM Exchange services

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