E-Mail Modern Authentication - Required Ports

[N.Bocke]

Hi there,

I am asking here as I can not find anything regarding this in the Documentation.
If I want to use modern authentication for my Mail Settings, which Ports (443 only?) do I have to allow to which set of IP Addresses / FQDNs?

I currently can not authorize the modern auth request from the Veeam Server.

Best regards

[HannesK]

Hello,
and welcome to the forums.

Yes, that's HTTPS. Indirectly DNS is also needed.

IP address ranges might be available from the mail providers you plan to use. Keep in mind, that you also need access to verify HTTPS certificates (CRL distribution points etc.) which makes it tricky to limit to IP addresses even if you have the ones for the mail servers.

Best regards
Hannes