Adding a 2nd IP address for Outbound Relay

In some cases, such as with redundant or load balanced internet connections, it may be necessary to list multiple Outbound SMTP Host Addresses for outbound filtering.

In order to list a secondary or tertiary IP for outbound filtering, follow these steps.

  1. Navigate to the Mailprotector console at
  2. Navigate to the domain you want to add the IP address to
  3. Select the "Mail Flow" tab either the group or domain you want to add the IP address for
  4. Under the "Outbound email source IPs," select the "Add option and input the IP address or hostname for the devices or servers you need to allow through Mailprotector's outbound relay.


If you have any additional questions, please do not hesitate to contact Mailprotector Support by selecting the "Submit a Request" button below or calling 1-800-393-4840 X2

Have more questions? Submit a request