Thanks for the reply.
By JBMS I meant Jboss Mail Server. Which version of the Jboss Mail Server can I use. I need a Mail server which supports IMAP. we are already using Jboss for deployment.
Sorry, I don't use the mail server. But the binding issue is still that some other application is using the port, and the link I posted should give you some ideas on tracking down who is using the port and then how to go about fixing it.
This issue is resolved, while installing the JBoss Mail Server I changed the defaults ports of SMTP and POP and now I dont get any exception