diff --git a/src/Mailcow.php b/src/Mailcow.php
index 51ea957..b592526 100644
--- a/src/Mailcow.php
+++ b/src/Mailcow.php
@@ -41,6 +41,16 @@ class Server_Manager_Mailcow extends Server_Manager
         ];
     }
 
+    /**
+     * Override default username generator method
+     *
+     * @return string
+     */
+    public function generateUsername($domainName)
+    {
+        return     "adm_" . str_replace(".", "", $domainName);
+    }
+
     /**
      * Returns link to account management page.
      *