diff --git a/sys/mailserver/mailserver.nix b/sys/mailserver/mailserver.nix
index 2d14143..117c856 100644
--- a/sys/mailserver/mailserver.nix
+++ b/sys/mailserver/mailserver.nix
@@ -39,6 +39,8 @@
     };
   };
 
+  networking.firewall.allowedTCPPorts = [ 80 ];
+
   mailserver = {
     enable = true;
     fqdn = "mail.idimitrov.dev";