On Tue, 20 Sep 2016 18:56:47 +0100
> This Spamassassin plugin will allow you to block by country.
> Create the 'nerd.cf' file containing the code, put it in your
> spamassasin ETC directory, and uncomment the countries you wish to
> block. Full details in the post.
It's not a plugin, it's a just a list of dns rules based on
Is the RelayCountry plugin not usable on Windows for some reason?