R: How to use notification mail with smtp without TLS?

[Bisonti Mario]

I am using manifoldcf as docker container.

If I try to check java version on the container:
java -version
openjdk version "11.0.25" 2024-10-15
OpenJDK Runtime Environment Temurin-11.0.25+9 (build 11.0.25+9)
OpenJDK 64-Bit Server VM Temurin-11.0.25+9 (build 11.0.25+9, mixed mode, 
sharing)

probably I am using the right version.