I do not agree with you. Setting admin=>false ends up in showing an 
input field for the username.
At least this should show up using the admin section and the imap 
server returning listing users is not allowed

Please use the mailing list to ask for support.

http://www.horde.org/mail/ contains a list of all available mailing lists.

I'm trying to change the acl for sharing folders. I can see the acls 
that were set through cyradm.
I'm using cyrus imap server, here is the servers.php:

<?php
$servers['cyrus'] = array(
     'name' => 'Cyrus IMAP Server',
     'server' => 'localhost',
     'hordeauth' => false,
     'protocol' => 'imap/ssl/novalidate-cert',
     'port' => 993,
     'maildomain' => '.....',
     'smtphost' => '127.0.0.1',
     'smtpport' => 25,
     'realm' => '',
     'preferred' => '',
     'admin' => array(
         'params' => array(
             'login' => 'administrator',
             'password' => '....',
             // The 'userhierarchy' parameter defaults to 'user.'
             // If you are using a nonstandard hierarchy for personal
             // mailboxes, you will need to set it here.
             'userhierarchy' => 'user.',
             // Although these defaults are normally all that is required,
             // you can modify the following parameters from their default
             // values.
             'protocol' => 'imap/ssl/novalidate-cert',
             'hostspec' => 'localhost',
             'port' => 993
         )
     ),
     'quota' => array(
         'driver' => 'imap',
         'params' => array('hide_quota_when_unlimited' => true),
     ),
     'acl' => array(
         'driver' => 'rfc2086',
     ),
);

I can login with administrator.
Removing the admin section from the servers.php ('admin' => false,), 
show an input field.


Regards, Silvio