[imp] Invalid mailbox name while sending new message

[Liutauras Adomaitis]

My configuration servers.php:

$servers['imap'] = array(
    'name' => 'IMAP',
    'server' => 'my server',
    'hordeauth' => false,
    'protocol' => 'imap/notls',
    'port' => 143,
    'folders' => 'INBOX.',
    'namespace' => '',
    'maildomain' => 'mydomain.lt',
    'smtphost' => 'my.smtp.server',
    'smtpport' => 25,
    'realm' => '',
    'preferred' => '',
    'dotfiles' => true,
    'hierarchies' => array(),
    'preferred' => 'address for webmail'
);


-- 
Liutauras