旧域名1.com做301跳转到新域名2.com :

旧域名1.com做301跳转到新域名2.com :
RewriteEngine on
RewriteCond %{HTTP_HOST} ^www.1.com$ [OR]
RewriteCond %{HTTP_HOST} ^1.com$
RewriteRule ^(.*)$ http://www.2.com [R=301,L]