JavaMail API dsn support

'com.sun.mail:dsn:1.4.2'

<dependency>
	<groupId>com.sun.mail</groupId>
	<artifactId>dsn</artifactId>
	<version>1.4.2</version>
</dependency>

<dependency org="com.sun.mail" name="dsn" rev="1.4.2"/>

"com.sun.mail", "dsn", "1.4.2"