To secure admin server connections that are not running on a secure Apache web server, one can use “stunnel”. For example, to secure Sun One ASP, the following command will do it (to be run on the server to secure):
stunnel -D 7 -P/tmp/ -p /usr/share/ssl/certs/imapd.pem -d 5143 -r localhost:5100
Of course, you may want to use a more appropriate secure cert.