Scan to RightFax (XML) eSF app is unable to connect to the RightFax server versions 16.6 and 20.2. This issue occurs when clicking the Apply or Test button on the application’s configuration page. The eSF app gets an error saying that the RightFax server address (IP address) is invalid and asks for a valid server address.
This article serves as a guide to gathering necessary information before opening an escalation item for network connectivity issues.
This article shows the additional information required to escalate Scan to SharePoint issues.