Svetoslav Marinov’s Blog

In many cases SSL certificates are issued for the "www." domain.
Then you'll want to have all links pointing to "www." domain otherwise you'll see Firefox's error message:

"Secure Connection Failed. The certificate is only valid for www.domain.com"

[code]
RewriteEngine on
#RewriteCond %{SERVER_PORT} ^80$

RewriteCond %{HTTP_HOST} ^domain\.com$ [NC]

RewriteRule .* https://www.domain.com%{REQUEST_URI} [QSA,R=301,L]

[/code]