The Perfect Setup - OpenSuSE 10.2 with pop3s

Hi I installed OpenSuSe 10.2 the perfect Setup without ISPconfig.
It is working fine but I would like my clientes connect to the server using pop3s How can I do this ??

Thanks in advance

 

You must open port 995 in the firewall.

 

I already done that but on the cliente (Thunderbird) what do I have to activate?

Thank You

 

I don't know how this option is named in Thunderbird... POP3s? Secure POP? Secure Connection? ...

 

what about in outlook express what are the options?

Thanks

 

It's named something like "This server requires a secure connection(SSL)".