User can’t send email after changing NLB mode on CAS/HUB server
Filed Under (Exchange 2007, Exchange 2010, Microsoft) by Tariq Jaber on 23-12-2010
Tagged Under : Exchange, Outlook
If you have two Network Load Balanced Exchange servers with the Hub transport and Client Access server roles installed on both of them, and you changed the NLB mode from multicast to unicast, you may not be able to send messages even if the messages are moved from the outbox folder to the Sent Item folder with the following error:
Task 'Microsoft Exchange Server' reported error (0x8004010F): 'The operation failed. An object could not be found.'
To resolve this issue restart the Mail Submission service on the servers.
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