how to set primary domain if 2 domain point to same host

[huyhoa]

I have two domains like 123.com and 456.com
Domain 456.com hosted and 123.com is parked for 456.com
So, now i want when people go to 123.ccom and 456.com it alway change to 123.com and still hosted domain 456.com and 123.com for parked.
Please help me.Thanks

[richardk]

Do both domain's show the same content?

Try the following in a .htaccess file in your document root

Code: Select all

Options +FollowSymLinks

RewriteEngine On

RewriteCond %{HTTP_HOST} !^www\.123\.com$ [NC]
RewriteRule .* http://www.123.com%{REQUEST_URI} [R=301,L]