Exchange 2010: Old fashioned POP without TLS/SSL

If you still need to support old fashioned POP connections over port 110, you need to make the following configuration steps:

  • Expand Server configuration
  • Select Client Access
  • Bring up the properties page for the POP3 connector
  • Switch to the Authentication tabs
  • Enable planin text logon
  • Enable the POP3 service in the services panel, and set the startup type to automatic