[imp] Importing S/MIME certificate fails

[Anna Christina Naß]

Hallo,

I've created a personal certificate via cacert.org, which was imported  
into Firefox. There I saved it to a .p12-file.

Then I navigated to "Settings -> Webmail -> S/MIME" and tried to  
import my personal certificate into Horde IMP.

It does seem okay and it tells me that my certificate has been  
imported via the green bubble, but I do not see it.

After importing the certificate it should show up in "Settings ->  
Webmail -> S/MIME" under "Your personal S/MIME certificate", should it?
But there only "No personal certificate" is shown.

My configuration:

Horde 5.1.1, IMP 6.1.2
APC cache, no memory cache. Prefs via SQL. VFS via local file system.
$conf[openssl][path] = '/usr/bin/openssl' and it exists.
$conf[openssl][cafile] = '/etc/ssl/certs/ca-certificates.crt' and it  
exists and contains CAcerts root.crt and class3.crt.

And ideas?

Thank you!

Kind regards,
Anna Christina Naß