blockhosts email notification question

I am running blockhosts on Gentoo 2006.1. Hopefully this doesn't sound dumb, but if I want email notifications on blocked IP's do I need to run some sort of smtp server or does blockhosts have the capability of sending mail to localhost without a system smtp server? I'm hoping allowing smtp connections to my lo interface will be all that is needed...

uses python smtplib

blockhosts does need a running smtp server - see blockhosts.cfg configuration section on mail.

By default, it will use the smtpserver running on localhost.