[CentOS] Re: Sendmail novrfy filter by ip address?

Tue Mar 25 16:54:25 UTC 2008
Sean Carolan <scarolan at gmail.com>

>  Block the outside world from reaching anything but the filter by firewall or
>  other means. Otherwise the spammers will find it and go around your filter.

I think this will probably work.  I believe this server does not need
to be open to the 'net.