I travel a lot and often get a restriction from local Internet Service Providers. Will the Secure SMTP server service work from any network?

Yes. The SMTP service authenticates your account based on your e-mail address or on a login and password, not on the network that your computer is using to access the internet.

You do not need to change your SMTP settings when you are traveling.

If your Internet Service Provider or network administrator blocks port 25 you can switch to an alternate port.

Any port numbers are available: 25, 2525, 80, 8080, 574, 4000, 5000, 5001