Change Outbound SMTP Port on Exchange 2007

You change Send Connector port by using PowerShell. Open Exchange Management Shell and type:

Get-SendConnector -Identity "Windows SBS Internet Send NameofyourServer" | fl

Check the port number then type:

Set-SendConnector -Identity "Windows SBS Internet Send NameofyourServer" -port 2525

In this example I set port 2525 as SMTP port for sending messages. Check the change by typing

Get-SendConnector -Identity "Windows SBS Internet Send NameofyourServer" | fl

HUB and EDGE servers are responsible for mail transport, so include all the servers you need in your requirement.