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SoughtRules is a custom rule set generated from spam 4 times a day by a SpamAssassin developer.
Only accept email in specified languages - TextCat
In /etc/spamassassin/local.pre add:
loadplugin Mail::SpamAssassin::Plugin::TextCat
In /etc/spamassassin/local.cf add:
ok_languages en es
Where "en es" is a list of codes for languages you wish to accept. The full list is in the TextCat documentation.
It is very important that the loadplugin line be added to a .pre file not a .cf file so it is loaded before the rules files are loaded, otherwise those rules will not get enabled.
Use a local, caching, non-forwarding DNS sever
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