What SMTP ports can I use?

One of the many advantages of using AuthSMTP is that we operate our service on many different ports in the event you find you are using a connection that is blocking some of the more standard SMTP ports.

Our SMTP service is available on the following ports:

  • 23
  • 25
  • 26
  • 325 (non-SSL only)
  • 2525

If you have any questions please contact us.