apache - RedirectCond Help for subdomains for www and www2

We have 2 subdomains www.mydomain.com and www2.mydomain.com. I'm trying to redirect pages to new site as below:

• www.mydomain.com/support to newdomain.com/site1/page1.html


• www2.mydomain.com/support to newdomain.com/site2/page2.html

I've set the redirect rule in httpd.conf as below:

RewriteCond %{HTTP_HOST} (www.)?mydomain.com

RewriteCond %{HTTP_HOST} !^$

RewriteRule ^/support/?$ http://newdomain.com/site1/page1.html [R=301,NC,L]

RewriteCond %{HTTP_HOST} (www2.)?mydomain.com

RewriteCond %{HTTP_HOST} !^$

RewriteRule ^/support/?$ http://newdomain.com/site2/page2.html [R=301,NC,L]

The first redirect rule is working fine, but not the other. In above case, both www and www2.mydomain.com/support are going to newdomain.com/site1/page1.html

Any help is appreciated!