Exchange Hub transport Server will be automatically load balanced with in the Active Directory Site. Hub Transport Servers are load balanced in Round robin fashion with in the Site. If you want to Force Exchange Mailbox server to use specific Hub Server you need to make use of SUBMISSIONSERVEROVERRIDELIST.
Set-MailboxServer -Id:MailboxServer1 -SubmissionServerOverrideList: htserver1,htserver2
Above commands will set MailboxServer to use htserver1 and htserver2 for mailsubmission. It is normally used for troubleshooting.
Shameless Null Neutrality
I tried this and it didnt work. How do I revert back or change things back to the way it was?
By default it’s not set, if you’d notice when you try Get-MailboxServer -Identity MbxServerName | fl you’ll notice that its like this “SubmissionServerOverrideList : {}”.
Hope this helps :),
Abdullah^2
By the way, I overlooked your question actually =). You can set it back to default by using $null instead of the server/s name.
Pingback: Setting Exchange Mailbox Server to Use specific Hub Transport for mail submission – SubmissionServerOverrideList « augiitblog