log4j2_example.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--suppress XmlUnboundNsPrefix -->
<configuration status="INFO">
    <appenders>
        <Console name="console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss} [%t] %-5level %c{1} - %msg%n" />
        </Console>
        <Console name="simpleConsole" target="SYSTEM_OUT">
            <PatternLayout pattern="%d Simple Java Mail SOCKS5 bridge - %level %m%n" />
        </Console>
    </appenders>
    <Loggers>
        <Logger name="org.simplejavamail" level="debug"/>
        <Logger name="org.simplejavamail.mailer.internal.MailerImpl" level="trace"/>
        <Logger name="org.simplejavamail.internal.clisupport" level="info"/>

        <!-- in case you're using authenticated proxy -->
        <Logger name="socks5bridge" level="info" additivity="false">
            <AppenderRef ref="simpleConsole" />
        </Logger>
        <Logger name="org.simplejavamail.api.mailer.internal.socks" level="info"/>
        <Logger name="org.subethamail.smtp.server" level="info"/>

        <Root level="debug">
            <AppenderRef ref="console" />
        </Root>
    </Loggers>
</configuration>