Certificates with a P900

[Stefan]

Hello List,

I'm trying to connect the Mail-Client of my Sony Ericsson P900 via IMAP to the 
kolab server.

Each time I try to establish the connection misc.log of imapd says:

<debug> imap[16363]: accepted connection
<notice> imap[16363]: TLS server engine: cannot load CA data
<error> imap[16363]: TLS server engine: No CA file specified. Client side 
certs may not work

What have I to do? Do I have to beam the certificate to my P900? And if yes, 
which certificate? There are lying around some certificates in my system
(locate .pem)

TIA

Stefan