Hack ISPConfig agar redirect ke halaman login Roundcube yang sudah auto populate username by URL

config.inc.local.php

<?php
// Direktori: /usr/local/ispconfig/interface/lib
$conf['webmail_url'] = 'https://webmail.example.com';

webmailer.php.patch

--- webmailer.php       2018-08-17 23:22:58.000000000 +0700
+++ /usr/local/ispconfig/interface/web/mail/webmailer.php       2019-01-06 23:52:38.709839771 +0700
@@ -48,6 +48,13 @@
 if ($serverId == 0){
        die ("No E-Mail - Server found!");
 }
+// Direktori: /usr/local/ispconfig/interface/web/mail/
+// Referensi: https://github.com/roundcube/roundcubemail/issues/4208
+$test = $app->db->queryOneRecord("SELECT email FROM mail_user WHERE mailuser_id = ?", $emailId);
+if (isset($test['email'])) {
+    header('Location: ' . $conf['webmail_url'] . '/?_user=' . $test['email']);
+    exit;
+}

 $serverData = $app->db->queryOneRecord("SELECT server_name FROM server WHERE server_id = ?", $serverId);