In addition to username and password authentication for your outbound email filtering we also support IP Authentication. 

In this process we will map your message credits and account details to IP addresses. This means that email will accept email from that IP and it will be tracked to your account. 

To request access to relay via our system please contact support and provide them your IP's in /32 notation. 

If you have IP blocks larger than /32 please break this down to /32 so we can map to the system.