# Turn on debug mode in Roundcube webmail

Please follow the tutorial to find Roundcube config file
(`config/config.inc.php`) first: 
[Locations of configuration and log files of major components](./file.locations.html#roundcube-webmail)

Then add below settings in `config/config.inc.php`:

```
// system error reporting, sum of: 1 = log; 4 = show
$config['debug_level'] = 1;

// Log SQL queries
$config['sql_debug'] = true;

// Log IMAP conversation
$config['imap_debug'] = true;

// Log LDAP conversation
$config['ldap_debug'] = true;

// Log SMTP conversation
$config['smtp_debug'] = true;
```