There is a standard called Domain Connect [0] that attempts to achieve this. Mailhardener will auto-detect Domain Connect and offer it automatically for 1-clic

There is a standard called Domain Connect [0] that attempts to achieve this. Mailhardener will auto-detect Domain Connect and offer it automatically for 1-click configuration, but your DNS service provider has to support it. [0] https://www.domainconnect.org/ https://www.domainconnect.org/