Log4J

Vendor: The Apache Software Foundation

log4j-api-2.13.3.jar
log4j-core-2.13.3.jar
log4j-jcl-2.13.3.jar
log4j-jul-2.13.3.jar
log4j-slf4j-impl-2.13.3.jar

Apache Log4j
Copyright 1999-2017 Apache Software Foundation

This product includes software developed at
The Apache Software Foundation (http://www.apache.org/).

ResolverUtil.java
Copyright 2005-2006 Tim Fennell

Dumbster SMTP test server
Copyright 2004 Jason Paul Kitchen

TypeUtil.java
Copyright 2002-2012 Ramnivas Laddad, Juergen Hoeller, Chris Beams

picocli (http://picocli.info)
Copyright 2017 Remko Popma

The Apache license appears in Apache.