feat: Update rspamd configurations

This commit introduces new whitelisted domains for SPFs, DKIMs, DMARCs and Greylists in the Rspamd configurations. It also adds new rules for incoming emails from bogensport-jugend@gmx.de, including disabling greylisting and specifying actions to apply.

systems/x86_64-linux/mx/rspamd.nix

@@ -5,28 +5,52 @@
     mode = "0660";
   }];
   services.rspamd.locals = {
+    "settings.conf" = {
+      bogenschiessen = {
+        from = "bogensport-jugend@gmx.de";
+        apply = {
+          actions = {
+            reject = 100.0;
+            greylist = null; # Disable greylisting (from 1.8.1)
+            "add header" = 100.0; # Please note the space, NOT an underscore
+          };
+        };
+      };
+    };
     "maps.d/spf_whitelist.inc.local" = {
       text = ''
         epicgames.com
         dmail.ai
+        twitter.com
+        x.com
+        gmx.de
       '';
     };
     "maps.d/spf_dkim_whitelist.inc.local" = {
       text = ''
         epicgames.com
         dmail.ai
+        twitter.com
+        x.com
+        gmx.de
       '';
     };
     "maps.d/dmarc_whitelist.inc.local" = {
       text = ''
         epicgames.com
         dmail.ai
+        twitter.com
+        x.com
+        gmx.de
       '';
     };
     "greylist-whitelist-domains.inc" = {
       text = ''
         dmail.ai
         epicgames.com
+        twitter.com
+        x.com
+        gmx.de
       '';
     };
   };