I'm trying to setup a .htaccess file which will allow users to bypass the password block if they come from a domain which does not start with preview. e.g. http://preview.example.com would trigger the password and http://example.com would not.
Here's what I've got so far:
SetEnvIfNoCase Host preview(.*\.)? preview_site AuthUserFile /Users/me/.htpasswd AuthGroupFile /dev/null AuthType Basic AuthName "Development Area" Require valid-user Order deny,allow Allow from 127 deny from env=preview_site Satisfy any