SetEnvIfNoCase Via evil-spam-proxy spammer=yes
SetEnvIfNoCase Referer evil-spam-domain.com spammer=yes
SetEnvIfNoCase Referer evil-spam-keyword spammer=yes
SetEnvIfNoCase Via pinappleproxy spammer=yes
SetEnvIfNoCase Referer semalt.com spammer=yes
SetEnvIfNoCase Referer poker spammer=yes

Order allow,deny
Allow from all
Deny from env=spammer