CUPS Server cannot recieve print request from CUPS Clients

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http://askubuntu.com – I have setup cups on Ubuntu 12.04 machine as a Server. And have setups cups on another Ubuntu(12.04) and Solaris (sparc AMD i386) machines as clients. Cups is up and running on server as well as on the clients. But, none of the print requests sent from either Ubuntu clients or Solaris clients are being received by Cups Server. The cupsd.config file on Ubuntu 12.04 Server: # Log general information in error_log - change "warn" to "debug" for troubleshooting... LogLevel debug # Deactivate CUPS' internal logrotating, as we provide a better one, especially # LogLevel debug2 gets usable no (HowTos)