Can any one help me on How to configure Inbound Email using POP?
You can add the following line to the config_override.php
$sugar_config['allow_pop_inbound'] = true;
Check here for further reference:
http://support.sugarcrm.com/Documentation/Sugar_Versions/6.5/Pro/Administration_Guide/Advanced_Configuration_Options/index.html#Allowing_POP_Email_Accounts