Problems setting up pop3s
 

I have a problem setting up secure pop3. I'm using Mandrake 9.2
The certificate seems to be at /etc/ssl/imap/ipop3sd.pem and when I try to check my email using Kmail it displays a Bad certificate from localhost.localdomain which is OK. The I created a pem certificate using openssl with the same name and replaced it when I try to check my mail it says I cannot connect to the mail server but if a put the older certificate it displays a bad certificate again meaning that it connects to the mail server. What could be wrong whit this???