diff --git a/package.json b/package.json
index 23e47c0..935102d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wms-core",
-  "version": "0.16.1",
+  "version": "0.16.3",
   "description": "Node web framework",
   "repository": "git@gitlab.com:ArisuOngaku/wms-core.git",
   "author": "Alice Gaudon <alice@gaudon.pro>",
diff --git a/src/Application.ts b/src/Application.ts
index ddcef9f..889ef73 100644
--- a/src/Application.ts
+++ b/src/Application.ts
@@ -186,9 +186,11 @@ export default abstract class Application {
             const fullPath = path.resolve(configDir, file);
             const stats = fs.lstatSync(fullPath);
             if (stats.uid !== process.getuid())
-                throw new SecurityError(fullPath + ' is not owned by this process (' + process.getuid() + ').');
-            if (stats.mode !== 400)
-                throw new SecurityError(fullPath + ' is not chmod 400.');
+                throw new SecurityError(`${fullPath} is not owned by this process (${process.getuid()}).`);
+
+            const mode = (stats.mode & parseInt('777', 8)).toString(8);
+            if (mode !== '400')
+                throw new SecurityError(`${fullPath} is ${mode}; should be 400.`);
         }
 
         // Check security fields
diff --git a/src/components/MailComponent.ts b/src/components/MailComponent.ts
index d42a1d7..38fd8b4 100644
--- a/src/components/MailComponent.ts
+++ b/src/components/MailComponent.ts
@@ -8,9 +8,9 @@ export default class MailComponent extends ApplicationComponent<void> {
 
 
     public async checkSecuritySettings(): Promise<void> {
-        if (!config.get<boolean>('mail.secure')) {
-            throw new SecurityError('Cannot set mail.secure to false');
-        }
+        // if (!config.get<boolean>('mail.secure')) {
+        //     throw new SecurityError('Cannot set mail.secure to false');
+        // }
         if (config.get<boolean>('mail.allow_invalid_tls')) {
             throw new SecurityError('Cannot set mail.allow_invalid_tls to true');
         }