diff --git a/flake.lock b/flake.lock
index 188dc44..7b4f460 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,5 +1,21 @@
 {
   "nodes": {
+    "blobs": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1604995301,
+        "narHash": "sha256-wcLzgLec6SGJA8fx1OEN1yV/Py5b+U5iyYpksUY/yLw=",
+        "owner": "simple-nixos-mailserver",
+        "repo": "blobs",
+        "rev": "2cccdf1ca48316f2cfd1c9a0017e8de5a7156265",
+        "type": "gitlab"
+      },
+      "original": {
+        "owner": "simple-nixos-mailserver",
+        "repo": "blobs",
+        "type": "gitlab"
+      }
+    },
     "dogetipbot-telegram": {
       "inputs": {
         "nixpkgs": [
@@ -59,11 +75,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1639891440,
-        "narHash": "sha256-FJxa6ObwOQKZy3VhwN5bJRzX+MV/Yq9WLHK/4jlPKrs=",
+        "lastModified": 1640077788,
+        "narHash": "sha256-YMSDk3hlucJTTARaHNOeQEF6zEW3A/x4sXgrz94VbS0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e6377ff35544226392b49fa2cf05590f9f0c4b43",
+        "rev": "9ab7d12287ced0e1b4c03b61c781901f178d9d77",
         "type": "github"
       },
       "original": {
@@ -72,13 +88,28 @@
         "type": "indirect"
       }
     },
-    "nixpkgs-unstable": {
+    "nixpkgs-21_05": {
       "locked": {
-        "lastModified": 1639876010,
-        "narHash": "sha256-naGsoUfsY92NaIGiFI8XFXBnesw8BQGe694xcfaLMDI=",
+        "lastModified": 1625692408,
+        "narHash": "sha256-e9L3TLLDVIJpMnHtiNHJE62oOh6emRtSZ244bgYJUZs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "395879c28386e1abf20c7ecacd45880759548391",
+        "rev": "c06613c25df3fe1dd26243847a3c105cf6770627",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-21.05",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1640139330,
+        "narHash": "sha256-Nkp3wUOGwtoQ7EH28RLVJ7EqB/e0TU7VcsM7GLy+SdY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "81cef6b70fb5d5cdba5a0fef3f714c2dadaf0d6d",
         "type": "github"
       },
       "original": {
@@ -99,22 +130,27 @@
     },
     "simple-nixos-mailserver": {
       "inputs": {
+        "blobs": "blobs",
         "nixpkgs": [
+          "nixpkgs-unstable"
+        ],
+        "nixpkgs-21_05": "nixpkgs-21_05",
+        "nixpkgs-21_11": [
           "nixpkgs"
         ],
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1622967674,
-        "narHash": "sha256-8RLe6Rqy2rKR/PGDMg/EVsWihsO+DQe/RYmlXdRZkLs=",
+        "lastModified": 1638911354,
+        "narHash": "sha256-hNhzLOp+dApEY15vwLAQZu+sjEQbJcOXCaSfAT6lpsQ=",
         "owner": "simple-nixos-mailserver",
         "repo": "nixos-mailserver",
-        "rev": "5675b122a947b40e551438df6a623efad19fd2e7",
+        "rev": "6e3a7b2ea6f0d68b82027b988aa25d3423787303",
         "type": "gitlab"
       },
       "original": {
         "owner": "simple-nixos-mailserver",
-        "ref": "nixos-21.05",
+        "ref": "nixos-21.11",
         "repo": "nixos-mailserver",
         "type": "gitlab"
       }
diff --git a/flake.nix b/flake.nix
index fe76ddc..1a97e1f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,8 +4,11 @@
     nixpkgs-unstable.url = "flake:nixpkgs/nixos-unstable";
     utils.url = "github:gytis-ivaskevicius/flake-utils-plus/v1.3.1";
     simple-nixos-mailserver = {
-      url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-21.05";
-      inputs.nixpkgs.follows = "nixpkgs";
+      url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-21.11";
+      inputs = {
+        nixpkgs.follows = "nixpkgs-unstable";
+        nixpkgs-21_11.follows = "nixpkgs";
+      };
     };
     dogetipbot-telegram = {
       url = "gitlab:nyanloutre/dogetipbot-telegram/master";
diff --git a/systems/LoutreOS/configuration.nix b/systems/LoutreOS/configuration.nix
index 62e1c55..cf299f5 100644
--- a/systems/LoutreOS/configuration.nix
+++ b/systems/LoutreOS/configuration.nix
@@ -112,7 +112,10 @@
   };
 
   systemd.network.networks = {
-    "40-bouygues".dhcpV4Config.RouteMetric = 1;
+    "40-bouygues" = {
+      dhcpV4Config.RouteMetric = 1;
+      networkConfig.KeepConfiguration = "dhcp-on-stop";
+    };
     "40-enp0s21u2".dhcpV4Config.RouteMetric = 1024;
   };
 
diff --git a/systems/LoutreOS/services.nix b/systems/LoutreOS/services.nix
index 811b9ce..0cffabc 100644
--- a/systems/LoutreOS/services.nix
+++ b/systems/LoutreOS/services.nix
@@ -87,7 +87,7 @@ in
     };
 
     rspamd.workers.controller.extraConfig = ''
-      secure_ip = ["127.0.0.1", "10.30.135.71"];
+      secure_ip = ["0.0.0.0/0"];
     '';
 
     redis.enable = true;