Problem in Sun Java Server while configuring Java Mail

I am now doing an application in Java Mail

While i am trying to set the connection factory in Java Mail the server is sthrowing an exception namely

"A "com.sun.enterprise.tools.guiframework.exception.FrameworkError" was caught. The message from the exception: "Unable to get View for ViewDescriptor 'javaMailSessions'"

The root cause is "javax.management.MalformedObjectNameException: Invalid character ':' in value part of property"

"

I like to know how to overcome this exception

[522 byte] By [Manojmaruthoora] at [2007-11-27 3:32:03]