[horde] Problem PDO

[David González]

Hello List!!

Yesterday i begin to get this error in the time to access to my webmail
site:

Horde Webmail: [horde] Could not instantiate PDO with DSN
"mysql:port=3306;protocol=tcp;host=127.0.0.1;dbname=xxxxx".  PDOException:
SQLSTATE[28000] [1045] Access denied for user 'xxxxx'@'myhostname.mydomain.tld'
(using password: YES) [pid 32110 on line 46 of
"/usr/share/pear/Horde/Db/Adapter/Pdo/Base.php"]

I see a error because in my file config/conf.php in the section of connect
to my DB have:

............
$conf['auth']['admins'] = array('root at mydomina.tld');
$conf['auth']['checkip'] = true;
$conf['auth']['checkbrowser'] = true;
$conf['auth']['resetpassword'] = true;
$conf['auth']['alternate_login'] = false;
$conf['auth']['redirect_on_logout'] = false;
$conf['auth']['list_users'] = 'list';
$conf['auth']['params']['username'] = 'xxxxx';
$conf['auth']['params']['password'] = 'XxXxX';
$conf['auth']['params']['hostspec'] = 'localhost';
$conf['auth']['params']['port'] = 3306;
$conf['auth']['params']['protocol'] = 'tcp';
$conf['auth']['params']['database'] = 'xxxxx';
$conf['auth']['params']['charset'] = 'utf-8';
$conf['auth']['params']['ssl'] = false;
$conf['auth']['params']['splitread'] = false;
$conf['auth']['params']['phptype'] = 'mysql';
$conf['auth']['params']['driverconfig'] = 'custom';
$conf['auth']['params']['table'] = 'mailbox';
$conf['auth']['params']['username_field'] = 'username';
$conf['auth']['params']['password_field'] = 'password';
$conf['auth']['params']['encryption'] = 'crypt-md5';
$conf['auth']['params']['show_encryption'] = false;
$conf['auth']['driver'] = 'sql';
............

Some body helpme??

Thnak,
David