This completely breaks Logback usage inside a servlet container running on javax.servlet for the next 10 years. Nothing works anymore:

• SMTP session from JNDI
• LoggerContextFilter
• LogbackServletContainerInitializer
• LogbackServletContextListener

This breaks 99% all servlet container users while fixing the issue for 1% of all users. javax will leave for 10 more years before the entire ecosystem has moved to jakarta.

The only option to support both I see is to move those portions of code to two separate modules:

• smtp-javakarta
• smtp-javax
• servletcontainer-jakarta
• servletcontainer-javax
• etc.