[horde] Custom log file for Horde instead of SYSLOG

[balia]

Hello,

I have set horde logging to 'DEBUG' but I don't want all the horde  
messages to go to SYSLOG.
Instead I want horde to log to a custom log file such as /var/log/horde.log

I have modified conf.php as follows:

$conf['log']['priority'] = 'DEBUG';
$conf['log']['ident'] = 'HORDE';
// $conf['log']['name'] = LOG_USER;
$conf['log']['name'] = "/var/log/horde.log";
//$conf['log']['type'] = 'syslog';
$conf['log']['type'] = 'file';
$conf['log']['enabled'] = true;
$conf['log_accesskeys'] = false;
$conf['log']['params']['append'] = true;

But all the log messages still go to SYSLOG.
What is missing?
Thank you.

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