/etc/courier/imapd-ssl and change the
To restart Courier you have to restart couple of services.
/etc/init.d/courier-authdaemon restart /etc/init.d/courier-imap restart /etc/init.d/courier-imap-ssl restart
And if you have it installed POP3 you need to restart those as well.
/etc/init.d/courier-pop restart /etc/init.d/courier-pop-ssl restart
If you would like users of every virtual domain on your server to
mail.their-domain.com instead of to
will have to sign new certificates for every domain and also use a
separate IP address for each virtual host. Information on placing
certificates for various hosts can be found in