mail-ra call getNewMessages on pop3 folder, which always return false

The

org.jboss.resource.adapter.mail.inflow.MailFolder calls javax.mail.Folder.hasNewMessages() to check for new messages.

POP3Folder instances allways return false on this request, see:
http://java.sun.com/products/javamail/javadocs/com/sun/mail/pop3/POP3Folder.html

A quick fix/work around:

public Message[] getNewMessages()
throws Exception
{
Message msgs[] = {};
/* This does not seem to be the most reliable new msg check. This should
probably be unread msgs with the msgs marked as read on successful
delivery.
*/
if( folder.hasNewMessages() )

{ int newCount = folder.getNewMessageCount(); int msgCount = folder.getMessageCount(); msgs = folder.getMessages(msgCount - newCount + 1, msgCount); return msgs; }

// Special handling of POP3, hasNewMessages() always returns false.
if (protocol.equalsIgnoreCase("pop3"))

{ msgs = folder.getMessages(); return msgs; }

return msgs;
}