netbackup Catalog email configuration

Please can someone provide any guide on how to configure the email for catalog.

I have given an email ID in the catalog backup policy but that doesnt seem to be sending any DR file or email notification once successful.

My master server is NBU appliance 5200 and 5220 2.5.2 with NBU 7.5.0.5

OS: LINUX SLEZ 10.2 SP2

Any ideas where the entries can be entered manually in command line.

Thanks, Anish