Skip to content

Mail Reflector: How to Make the Exchange Server Listen on the New Port Number?

Last updated 1 min read Email Troubleshooting

Article Summary

  • On Exchange 2000 or 2003, start the Exchange System Manager, then click 'Server Name', 'Protocols' and 'SMTP'.
  • Right-click the 'Default SMTP Virtual Server', choose 'Properties', then on the 'General' tab click 'Advanced' and 'Edit'.
  • Set the 'Transmission Control Protocol' (TCP) port to the new value, for example 2525 instead of 25.

Exchange 2000 / 2003: To change the SMTP listening port on a server that is running 2000 or 2003 from port 25 to another port (for example: port 2525) follow these steps:

  1. Start the Exchange System Manager.

  2. Locate and click “Server Name,” click “Protocols” and then click “SMTP.”

  3. Right click the Default SMTP Virtual Server object, and then click “Properties.”

  4. On the “General” tab, click the “Advanced” button, click the “Edit” button, and then set the “Transmission Control Protocol” (TCP) port to 2525 (or whatever new value you require).

  5. Hub Transport

  6. Properties

  7. Network

  8. Local IP Addresses (Edit Receive Connector Binding)