By default, PTX Link behaves as a normal SMTP server, but operating on TCP Port 2525. If TCP port 2525 cannot be used then PT-X Link can be configured to use a different TCP port.
Refer to PT-X Link Configuration Guide for details on using a non-standard TCP Port.
PTX Link will need access to port 443 as it communicates with PT-X Connect over HTTPS.
PTX Link authenticates using OAuth2 credentials. The certificate used is based on a 2048-bit RSA key with SHA-256 hashing. Protocols supported for HTTPS connections are TLS 1.2, 1.1 and 1.0.
Please note: PTX Link is installed onto a customer's server or a desktop PC . If there is a firewall or proxy in place then access to these ports will be required.