[horde] Passwd module

[Martin S]

I've been trying to get the passwd function to work properly. I've set the SQL 
connection method in config/backends.local.php but when I try to access the 
function I get

No backend configured for this host

1. Passwd_Basic->__construct() /var/www/html/webmail/passwd/index.php:20
2. Passwd_Factory_Driver->__get() 
/var/www/html/webmail/passwd/lib/Basic.php:65
3. Passwd_Factory_Driver->_loadBackends() 
/var/www/html/webmail/passwd/lib/Factory/Driver.php:47

I haven't dared fiddling with the default backends.php file (it says you 
shouldn't). 

Not sure if this: http://dokuwiki.nausch.org/doku.php/centos:mail_c6:horde_9
Would provide a solution (my German is extremely rusty).
Any suggestions?

/Martin S