4.0.0 io.netty netty-parent 4.1.66.Final-SNAPSHOT netty-codec-smtp jar Netty/Codec/SMTP io.netty.codec.smtp ${project.groupId} netty-common ${project.version} ${project.groupId} netty-buffer ${project.version} ${project.groupId} netty-transport ${project.version} ${project.groupId} netty-codec ${project.version}