diff --git a/back/models/vn-user.js b/back/models/vn-user.js
index b1d09f0c0b..39e7008caf 100644
--- a/back/models/vn-user.js
+++ b/back/models/vn-user.js
@@ -258,18 +258,20 @@ module.exports = function(Self) {
 
         class Mailer {
             async send(verifyOptions, cb) {
-                const url = new URL(verifyOptions.verifyHref);
-                if (process.env.NODE_ENV) url.port = '';
+                try {
+                    const url = new URL(verifyOptions.verifyHref);
+                    if (process.env.NODE_ENV) url.port = '';
 
-                const params = {
-                    url: url.href,
-                    recipient: verifyOptions.to
-                };
+                    const email = new Email('email-verify', {
+                        url: url.href,
+                        recipient: verifyOptions.to
+                    });
+                    await email.send();
 
-                const email = new Email('email-verify', params);
-                email.send();
-
-                cb(null, verifyOptions.to);
+                    cb(null, verifyOptions.to);
+                } catch (err) {
+                    cb(err);
+                }
             }
         }
 
diff --git a/modules/account/back/models/samba-config.js b/modules/account/back/models/samba-config.js
index f5672ca215..927510a291 100644
--- a/modules/account/back/models/samba-config.js
+++ b/modules/account/back/models/samba-config.js
@@ -7,7 +7,8 @@ const execFile = require('child_process').execFile;
  * https://docs.microsoft.com/en-us/troubleshoot/windows-server/identity/useraccountcontrol-manipulate-account-properties
  */
 const UserAccountControlFlags = {
-    ACCOUNTDISABLE: 2
+    ACCOUNTDISABLE: 0x2,
+    DONT_EXPIRE_PASSWD: 0x10000
 };
 
 module.exports = Self => {
@@ -118,7 +119,8 @@ module.exports = Self => {
                 }
 
                 entry = {
-                    userAccountControl: sambaUser.userAccountControl
+                    userAccountControl: (sambaUser.userAccountControl
+                        | UserAccountControlFlags.DONT_EXPIRE_PASSWD)
                         & ~UserAccountControlFlags.ACCOUNTDISABLE,
                     uidNumber: info.uidNumber,
                     accountExpires: 0,