Spotlight warning: The connection to the SMTP server is not secure. It is recommended to use SSL/TLS v1.2 and above. (4368614)

Spotlight warning: The connection to the SMTP server is not secure. It is recommended to use SSL/TLS v1.2 and above.

When creating a SMTP server e-mail connection, there is a warning message stating "The connection to the SMTP server is not secure. It is recommended to use SSL/TLS v1.2 and above."

In Spotlight on SQL Server version 13.x and newer, there is some code modifications where there are some predefined SMTP properties, one extra property (mail.smtp.ssl.protocols) added for constructing smtp properties for port other than 25. 

Because port 25 (SMTP) is not secure, Spotlight suggests to use the SSL/TLS v1.2 and above for encrypting the data that way adds an extra security layer. 

Since this is a warning message, the user can still use port 25, but it is recommended to implement SSL/TLS v1.2 and above. Or the user can use another port such as 587.