[horde] Force cram-md5 authentication.

[Michael C. Robinson]

I've changed backends.local.php to this:

<?php> 
$servers['secure-imap'] = array> (
     'disabled' => false,
     'name' => 'robinson-west.com',
     'hostspec' => 'mail.robinson-west.com',
     'hordeauth' => full,
     'protocol' => 'imap',
     'port' => 993,
     'secure' => 'tls',
     'maildomain' => 'robinson-west.com',
     'acl' => true,
     'cache' => false,
     'use_clear_passwd' => false,
 );> ?>

Still not getting horde to do cram-md5...

I closed off imap port 143, only 993 is open.
I'm using dovecot 2.x that comes with CentOS 6.

If horde can't do cram-md5 like evolution can,
what is the best alternative for security?