secure pop with Cyrus IMAP4 v1.5.19

[Yann K.]

I use a Cyrus IMAP4 v1.5.19 server. on a debian woody
All run fine.
Some of my users would to use secure pop to retrieve their mails.
Today i use pop3d for pop3 protocol on the 110 port , ans stunnel to 
encapsulate pop3 on the 993 port. 
It works.
But i have seen that each process of stunnel run a process on the server.
Really, i find it can be very hard for the server.
I prefer, if it's possible, to run a secure pop daemon instead.
Some people say me that there is a possibility with cyrus...
If somebody have a proposition...

Regards,

Yann K.