I know the heading sounds too simple to even attempt to reply but I am having a peculiar problem.
I have written a standalone java application which connects to JMS Container(v3.0) running on SUN One application server(v7.0 up2). I am able to connect and send a message only if the JMS port is configured to 7676 but the moment I change the port number to any thing other than 7676 I start getting a connect exception. (I am pasting the stack for reference.)
On the face of it, it looks like a firewall issue but while JMS port is configured to other than 7676, application looking up through LDAP can connect and send messages to the Queue!