Mule 3.6.1 and Logentries using log4j2 - mule

Question

We are building our application with Mule 3.6.1. In order to overwrite their log, we need to use log4j2.xml.
I followed the example for making one here: https://logentries.com/doc/java/. When I run our application I am getting:
2015-05-06 09:56:37,603 ERROR Error processing element Logentries: CLASS_NOT_FOUND
2015-05-06 09:56:37,606 ERROR Unable to locate appender le for logger
This makes me wonder if I am missing something. I am not sure what those steps mean actually:
(1) Install Log4j2 (if you are not already using it).
(2) Install the Logentries appender.
(3) Configure the Logentries appender.
Those are descibed only for log4j2 and not for log4j or logback. I tried log4j and logback
as descibed https://logentries.com/doc/java/ from a general Eclipse project and they both worked.
However, in the general Eclipse project log4j2 didnt work.
There should be some special setting that I am missing but I cant really see what on Apaches site.
This is how our Gradle looks like:
dependencies {
compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.2'
compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.2'
compile group: 'org.slf4j', name: 'log4j-over-slf4j', version: '1.6.4'
compile group: 'com.logentries', name: 'logentries-appender', version: 'RELEASE'
compile group: 'log4j', name: 'log4j', version: '1.2.16'

Answer 1

Actually, I found out what was wrong. The problem was here:
compile group: 'com.logentries', name: 'logentries-appender', version: 'RELEASE'
This downloaded the following jar:
file:/C:/Projects/tralala/.mule/apps/ws-comaround-cfx/lib/logentries-appender-1.1.20.jar which do not include the support for log4j2!
I had to change to
compile group: 'com.logentries', name: 'logentries-appender', version: '1.1.30'
1.1.30 version includes the log4j2 support. Interesting why RELEASE as version do not work though. I tried it also in Eclipse and changing the version there worked also fine.

Answer 2

Please go through the file log4j2-test.xml
It might be on the below pattern.
<Configuration>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%-5p %d [%t] %c: %m%n"/>
</Console>
<Logentries >
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss ZZZ} %-5p: %F:%L %m"/>
<Name>le</Name>
<Token>${logentries.token}</Token>
<Debug>false</Debug>
<Ssl>False</Ssl>
</Logentries>
</Appenders>
<Loggers>
<Root level="DEBUG">
<AppenderRef ref="Console"/>
<AppenderRef ref="le"/>
</Root>
</Loggers>
</Configuration>
Please remove ref="le" and 'Logentries' entry if you are not sure what extra classes need to added or version to be changed.