[imp] smtp authentication

[jon azpiazu]

Hi all,

I am running the last version of horde and imp from the cvs, and I am
having problems when trying to send mails.
My smtp server requires authentication, so I have set Horde to do
authentication:
$conf['mailer']['params']['host'] = 'localhost';
$conf['mailer']['params']['port'] = 25;
$conf['mailer']['params']['localhost'] = 'xxx.com';
$conf['mailer']['params']['auth'] = 'LOGIN';
$conf['mailer']['type'] = 'smtp';

When sending a mail, I receive the following feedback from horde:
"unable to authenticate to smtp server"

This is what I get from Horde logs:
Apr 23 14:46:21 HORDE [error] [imp] unable to authenticate to smtp
server [on line 933 of "/var/www/horde/imp/compose.php"]

And this is what I get from mail logs:
Apr 23 14:46:20 superserver postfix/smtpd[1312]: warning:
superserver[127.0.0.1]: SASL LOGIN authentication failed
Apr 23 14:46:21 superserver postfix/smtpd[1312]: lost connection after
AUTH from superserver[127.0.0.1]

Any idea will be welcome,
thanks

Jon