Hello

Anyone please help me to solving this issues

I was successfully configured the postfix on my ip address.
i create the user mail dir and i got the external mail in that folder.but am not able to receive the bounce mail.

can you please me how can i receive the bounce mail.

You can follow your several other postfix related threads, and continue to read the documentation. This is becoming like your threads about DKIM, where you open several. Again, have you checked/read the documentation????
http://www.postfix.org/bounce.8.html

Bounce messages are returned to whatever relay system they last left. You have to configure that to forward the bounces back to your system for processing. It may be simpler to process the bounces on it than getting the bounces forwarded back to your system, but that's up to YOU to figure out. The documentation covers it.