I did a fresh checkout and followed the steps in BUILDING.txt
I configured spring-beans.xml to use AsyncSMTPServer. After applying patch from
JAMES-949, the server fails at start-up with a ClassDefNotFound exception "org.slf4j.impl.StaticLoggerBinder".
This class can be found in the slf4j linker jars (e.g.: slf4j-log4j12-1.5.2.jar) which links the slf4j-core to the log4j framework.
Since I have no experience with maven, I have no clue how to resolve this
As a workaround you may dowload the jar-file manually and edit run.bat / run.sh to include the jar file in the classpath.