Hi, you can follow the suggestion in https://stackoverflow.com/questions/38205947/sslhandshakeexception-no-appropriate-protocol. Add "-Dmail.smtp.starttls.enable=true -Dmail.smtp.ssl.protocols=TLSv1.2" (key in without the quotation marks) in the Joget Tomcat startup script or batch file.

This issue has also been fixed in Joget v6 and DX:

• Changes in v7.0.17: Fixed: jw-community - SSLHandshakeException when sending an email using TLS 1.2 in the latest OpenJDK.
• Changes in v7.0.17: Fixed: joget-enterprise - SSLHandshakeException when sending an email using TLS 1.2 in the latest OpenJDK.
• Changes in 6.0.34: Fixed: jw-community - SSLHandshakeException when sending an email using TLS 1.2 in latest OpenJDK.
• Changes in 6.0.32: Fixed: jw-community - SSLHandshakeException when sending an email using TLS 1.2 in latest OpenJDK.

In the latest build, we have upgraded the JavaMail library to version 1.6.2 to support TLS 1.2, since OpenJDK has disabled TLS 1.0 and 1.1 availability by default in the security.properties file. Do consider upgrading to the latest Joget v6.0.34 (released on 14th Dec 2021) or DX v7.0.25 (released on 29 Nov 2021) to benefit from all the latest fixes and security patches. Thank you.

Hi Andrew,

Thankyou for the response.

Add "-Dmail.smtp.starttls.enable=true -Dmail.smtp.ssl.protocols=TLSv1.2" (key in without the quotation marks) in the Joget Tomcat startup script or batch file.

Can you please advise in which file should I add the above code, catalina.bat or startup.bat ? 

On Windows: joget-start.bat

On Linux: joget-start.sh

It would be an existing "set JAVA_OPTS..." line. Note to maintain the "-javaagent:/opt/joget/wflow//glowroot/glowroot.jar" position in the line as the last parameter in the Joget startup script.

Thank you so much  Andrew, it worked fine.