rspamd: whitelist tu networks

modules/mail/default.nix

@@ -292,7 +292,18 @@ in
           }
         '';
 
-        "multimap.conf".text = ''
+        "multimap.conf".text =
+          let
+            local_ips = pkgs.writeText "localhost.map" ''
+              ::1
+              127.0.0.1
+            '';
+            tud_ips = pkgs.writeText "tud.map" ''
+              141.30.0.0/16
+              141.76.0.0/16
+            '';
+          in
+          ''
             WHITELIST_SENDER_DOMAIN {
               type = "from";
               filter = "email:domain";
@@ -322,6 +333,15 @@ in
               action = "reject";
               regexp = true;
             }
+            RECEIVED_LOCALHOST {
+              type = "ip";
+              action = "accept";
+              map = ${local_ips};
+            }
+            RECEIVED_TU_NETWORKS {
+              type = "ip";
+              map = ${tud_ips};
+            }
 
           '';
       };