From 5d2f866a575c571d1883f93001ccb3d8d9f48260 Mon Sep 17 00:00:00 2001
From: Christine Elisabeth Koppel <kuutruu@posteo.net>
Date: Mon, 16 Feb 2026 02:32:52 +0100
Subject: [PATCH] Open TCP and UDP port 25 in firewall for mail server

---
 nix-system-configs/modules/system/mail-server.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/nix-system-configs/modules/system/mail-server.nix b/nix-system-configs/modules/system/mail-server.nix
index 2ad3f19..b482176 100644
--- a/nix-system-configs/modules/system/mail-server.nix
+++ b/nix-system-configs/modules/system/mail-server.nix
@@ -154,5 +154,12 @@ in {
         };
       };
     };
+
+        networking.firewall.allowedTCPPorts = [
+            25
+        ];
+        networking.firewall.allowedUDPPorts = [
+            25
+        ];
   };
 }