I am using nginx on Rackspace cloud following a tutorial (http://www.howtoforge.com/running-phpmyadmin-on-nginx-lemp-on-debian-squeeze-ubuntu-11.04), searched the net and so far can't get this sorted.

I want www.mysite.com to go to mysite.com as normal in .htaccess for seo and other reasons.

My vi /etc/nginx/sites-available/www.example.com.vhost code:

server {
listen 80;
server_name www.example.com example.com;
root /var/www/www.example.com/web;

if ($http_host != "www.example.com") {
rewrite ^ http://example.com$request_uri permanent;
}

I have also tried

server {
listen 80;
server_name example.com;
root /var/www/www.example.com/web;

if ($http_host != "www.example.com") {
rewrite ^ http://example.com$request_uri permanent;
}

I also tried. Both the second attempts give redirect loop errors.

if ($host = 'www.example.com' ) {
rewrite ^ http://example.com$uri permanent;
}

My DNS is setup as standard:

site.com 192.192.6.8 A type at 300 seconds www.site.com 192.192.6.8 A type at 300 seconds

(example IPs and folders have been used for examples and to help people in future). I use Ubuntu 11.