It has been a long battle with Microsoft to have them whitelist my IP address of the LightSail AWS server. When I go to the Join SNDS and JMRP (https://sendersupport.olc.protection.outlook.com/snds/JMRP.aspx?wa=wsignin1.0) page it is asking to enter the IP address, but then the selected Authorization email is not one I have access to.

The domain is hosted on AWS's Lightsail and uses Plesk to manage it. The available emails are enter image description here

Anyone has any idea how to continue here?

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