Added missing domain_idn=$domain in v-restore-user

bin/v-restore-user

@@ -568,6 +568,7 @@ if [ "$mail" != 'no' ] && [ ! -z "$MAIL_SYSTEM" ]; then
         # Rebuilding mail config
         rebuild_mail_domain_conf
         
+        domain_idn=$domain
         format_domain_idn
 
         # Restoring emails