Horde_Auth 2.0.6.

Changes have been made in Git (master):

commit b9bfeff44023065c13caf06e4bcc277fec354edd
Author: Michael M Slusarz <slusarz@horde.org>
Date:   Tue Jul 16 16:25:51 2013 -0600

     [mms] Fix adding/deleting users via IMAP administration (Bug #12426).

  framework/Auth/lib/Horde/Auth/Imap.php |   16 ++++++++++++----
  framework/Auth/package.xml             |    4 ++--
  2 files changed, 14 insertions(+), 6 deletions(-)

http://git.horde.org/horde-git/-/commit/b9bfeff44023065c13caf06e4bcc277fec354edd

We have a horde "admin" user which should be able to create accounts 
by IMAP with this in backends.local.php:

       'admin' => array(
           'user' => 'cyrus',
           'password' => 'some-password',
           'userhierarchy' => 'user.'

As logged-in admin go to administration->users type in account-name 
and password and press add-user.
Horde is configured to let IMP handle authentication.

This worked fine in older releases but stoppen working around Horde 
5.x (now Horde 5.1.1).

*What* are you doing to reproduce (i.e. steps in the UI).

I can create a mailbox in my personal namespace, which is all I have 
tried since there is no further details here.

A tcpdump shows that Horde send a

"CREATE user."

which obviously result in

"NO Invalid mailbox name"

So the question is why Horde ignores the choosen mailbox name. It 
would be interesting to see the config for thoose installations where 
it actually works to create a mailbox.

Can't reproduce.

With the latest Horde/IMP Version the creation of mailboxes fail if 
IMP as authentication is used. This worked as expected in older 
versions.

Setup is Cyrus 2.4.17 wit latest Horde/IMP and the following 
backends.local.php:
$servers['advanced'] = array(
     'disabled' => false,
     'name' => 'MAILER',
     'hostspec' => 'mailer.kwsoft.de',
     'port' => 143,
     'secure' => 'tls',
     'protocol' => 'imap',
     'maildomain' => '',
     'smtp' => array(
     //    'auth' => true,
     //    'localhost' => 'localhost',
     //    'host' => 'smtp.example.com',
     //    'password' => null,
     //    'port' => 25,
     //    'username' => null
     ),
      'admin' => array(
          'user' => 'cyrus',
          'password' => 'some-password',
          'userhierarchy' => 'user.'
      ),
     'quota' => array(
         'driver' => 'imap',
         'params' => array(
             'hide_when_unlimited' => true,
             'unit' => 'MB'
         )
     ),
     'acl' => true,
     'cache' => true,
     'debug' => '/tmp/imap.log',
     'debug_raw' => true,
);

The debug log does not include anything about this request.