Exchange 5.5 Autentication Settings ----------------------------------- To configure MailZu to authenticate users against Exchange 5.5, edit the config/config.php and tailor the variables mentioned here for your environment. // Set an authentication method: 'ldap','ad', 'sql' or 'exchange' (Exchange 5.5) $conf['auth']['serverType'] = 'exchange'; These three attributes are enough to be authenticated to the MailZu interface: // Exchange 5.5 server host and IMAP port $conf['auth']['exch_host'] = '10.1.1.20:143'; // Exchange's LDAP server, it usually has the same IP as the Exchange server $conf['auth']['exch_ldap'] = '10.1.1.20'; // Exchange default NT domain $conf['auth']['exch_domain'] = 'mycorp'; At the MailZu login, enter the user NT login as username. This code may not work if the user's Exchange alias is different from the NT login. Thanks to Bogdan Baliuci <b.baliuc@rogers.com> for his code contribution.