netfilter DROP traffic from some mail abusers

diff --git a/modules/exim/manifests/mx.pp b/modules/exim/manifests/mx.pp
index cddf405..dce0358 100644 (file)
--- a/modules/exim/manifests/mx.pp
+++ b/modules/exim/manifests/mx.pp
@@ -13,6 +13,16 @@ class exim::mx inherits exim {
                notify  => Service['exim4'],
        }
 
+       # 20181010 many connections:
+       #  188.165.219.27
+       #  125.72.232.*
+       #  140.224.61.*
+       #  117.24.38.*
+       @ferm::rule { 'dsa-mail-abusers':
+               prio  => "000",
+               rule  => "saddr (188.165.219.27 125.72.232.0/24 140.224.61.0/24 117.24.38.0/24) DROP",
+       }
+
        # MXs used as smarthosts
        @ferm::rule { 'dsa-exim-submission':
                description => 'Allow SMTP',