procmailrc file issue

For getting the bounces generated by krishna's mailer daemon, which would be sent to noreply@radiosai.org, the postfix install needs to be configured to deliver mail to radiosai.org domain also, and procmailrc has to be configured.

http://hnsws.blogspot.in/2010/11/bounce-processing-for-yahoo-and-new-ip.html

Had done the procmailrc, now have adjusted main.cf

changed
mydestination = radiosai.org, krishna, localhost.localdomain, localhost

to
mydestination = radiosai.org, krishna, localhost.localdomain, localhost, krishna.radiosai.org

But actually that was not the problem - the problem was that .procmailrc was named procmailrc (no dot at beginning). renamed it with the dot, started working.