SMTP Proxy Server as spam/virus filter

The apache mail server James has come a long way since 2006.
it now supports the Tarpitting that fluffy does.
it is an Enterprise software with a lot of bells and whistles.
It will verify the domain connecting
the hello and ehelo domains
it will send any that don't pass to deadletters or you can just send them to NULL
which is the same as a wastebasket.
It also ties into the White and backlists on the internet.
90% of my connection are spammers and now the server coast along instead of having to proecess the spam mail at all.