From ba7e32a2a7b2a3d2c4d16af57d852f9e54107488 Mon Sep 17 00:00:00 2001
From: Christine Elisabeth Koppel <kuutruu@posteo.net>
Date: Sun, 15 Feb 2026 22:18:51 +0100
Subject: [PATCH] Try to investiagte the header issue.

---
 nix-system-configs/modules/system/mail-server.nix | 2 +-
 nix-system-configs/modules/system/traefik.nix     | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/nix-system-configs/modules/system/mail-server.nix b/nix-system-configs/modules/system/mail-server.nix
index 5f23077..4419ab6 100644
--- a/nix-system-configs/modules/system/mail-server.nix
+++ b/nix-system-configs/modules/system/mail-server.nix
@@ -98,7 +98,7 @@ in {
               protocol = "smtp";
               tls.implicit = true;
               # Also trust proxy for SMTPS
-              proxy.trusted-networks = ["10.1.1.250/31"];
+              proxy.trusted-networks = ["10.1.1.250/32"];
             };
             imaps = {
               bind = "[::]:993";
diff --git a/nix-system-configs/modules/system/traefik.nix b/nix-system-configs/modules/system/traefik.nix
index 76bf4ed..4bf7731 100644
--- a/nix-system-configs/modules/system/traefik.nix
+++ b/nix-system-configs/modules/system/traefik.nix
@@ -517,14 +517,17 @@ in {
 
           # Mail TCP services
           mail-smtp.loadBalancer = {
+                  proxyProtocol = { version = 2; }; # Add this line
             servers = [{address = "10.1.1.15:25";}];
           };
 
           mail-smtps.loadBalancer = {
+                  proxyProtocol = { version = 2; }; # Add this line
             servers = [{address = "10.1.1.15:465";}];
           };
 
           mail-imaps.loadBalancer = {
+                  proxyProtocol = { version = 2; }; # Add this line
             servers = [{address = "10.1.1.15:993";}];
           };
         };