Classes contained in javamail-dsn-1.4.jar: com.sun.mail.dsn.DeliveryStatus.class com.sun.mail.dsn.MessageHeaders.class com.sun.mail.dsn.MultipartReport.class com.sun.mail.dsn.message_deliverystatus.class com.sun.mail.dsn.multipart_report.class com.sun.mail.dsn.text_rfc822headers.class