diff --git a/hosts/nuos/configuration.nix b/hosts/nuos/configuration.nix
index fadb479..027bb40 100644
--- a/hosts/nuos/configuration.nix
+++ b/hosts/nuos/configuration.nix
@@ -331,7 +331,7 @@
 
     22000 # syncthing
 
-    125 # mail
+    25 # mail
   ];
   networking.firewall.allowedUDPPorts = [
     22 # ssh