On 20/09/2016 11:53, Thomas Barth wrote:

is it possible to use geoiplookup with Spamassassin? I want to reject all mails as spam not send in my country or another second country, but accept whitelisted mailing list addresses. Any chance to use geoiplookup for this? I want to exclude Spammer Countries e.g. China, Thaiwan, India, etc...

On 20/09/2016 18:56, Groach wrote:
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. https://www.hmailserver.com/forum/viewtopic.php?f=7&t=29992&p=187520#p187500

It seems others have taken this approach as a proven effective solution too: http://vdhout.nl/2015/07/block-email-from-foreign-countries

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