We are just migrating to nginx from Apache 2 and are having a few issues with some rewrite rules. The following is what used to work on Apache:

RewriteEngine on Options +FollowSymLinks #RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-f #RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-d RewriteRule ^(.*)/p([0-9]+)-(.*)-page([0-9+]).html$ showproduct.php?product=$2&cpage=$4 [L] RewriteRule ^(.*)/p([0-9]+)-(.*).html$ showproduct.php?product=$2 [L] RewriteRule ^(.*)/p([0-9]+).html$ showproduct.php?product=$2 [L] RewriteRule ^g([0-9]+)-(.*)-page([0-9]+).html$ showcat.php?cat=$1&page=$3 [L] RewriteRule ^g([0-9]+)-(.*).html$ showcat.php?cat=$1 [L] RewriteRule ^(.*)/index([0-9]+)-([0-9]+).html$ index.php?cat=$2&page=$3 [L] RewriteRule ^(.*)/index([0-9]+).html$ index.php?cat=$2 [L] RewriteRule ^m([0-9]+)-(.*)-protype([0-9]+).html$ member.php?uid=$1&protype=$3 [L] RewriteRule ^m([0-9]+)-(.*).html$ member.php?uid=$1 [L] RewriteRule ^board.html$ board.php [L] RewriteRule ^b([0-9]+)-(.*).html$ board.php?msg=$1 [L] RewriteRule ^u([0-9]+)-(.*)-page([0-9]+).html$ showcat.php?ppuser=$1&page=$3 [L] RewriteRule ^u([0-9]+)-(.*).html$ showcat.php?ppuser=$1 [L] RewriteRule ^s([0-9]+)-(.*)-page([0-9]+).html$ showmembers.php?cat=$1&page=$3 [L] RewriteRule ^s([0-9]+)-(.*).html$ showmembers.php?cat=$1 [L] 

And this is what we turned it into:

location /classifieds/ { rewrite ^/classifieds/(.*)/p([0-9]+)-(.*)-page([0-9+]).html$ /classifieds/showproduct.php?product=$2&cpage=$4 permanent; rewrite ^/classifieds/(.*)/p([0-9]+)-(.*).html$ /classifieds/showproduct.php?product=$2 permanent; rewrite ^/classifieds/(.*)/p([0-9]+).html$ /classifieds/showproduct.php?product=$2 permanent; rewrite ^/classifieds/g([0-9]+)-(.*)-page([0-9]+).html$ /classifieds/showcat.php?cat=$1&page=$3 permanent; rewrite ^/classifieds/g([0-9]+)-(.*).html$ /classifieds/showcat.php?cat=$1 permanent; rewrite ^/classifieds/(.*)/index([0-9]+)-([0-9]+).html$ /classifieds/index.php?cat=$2&page=$3 permanent; rewrite ^/classifieds/(.*)/index([0-9]+).html$ /classifieds/index.php?cat=$2 permanent; rewrite ^/classifieds/m([0-9]+)-(.*)-protype([0-9]+).html$ /classifieds/member.php?uid=$1&protype=$3 permanent; rewrite ^/classifieds/m([0-9]+)-(.*).html$ /classifieds/member.php?uid=$1 permanent; rewrite ^/classifieds/board.html$ /classifieds/board.php permanent; rewrite ^/classifieds/b([0-9]+)-(.*).html$ /classifieds/board.php?msg=$1 permanent; rewrite ^/classifieds/u([0-9]+)-(.*)-page([0-9]+).html$ /classifieds/showcat.php?ppuser=$1&page=$3 permanent; rewrite ^/classifieds/u([0-9]+)-(.*).html$ /classifieds/showcat.php?ppuser=$1 permanent; rewrite ^/classifieds/s([0-9]+)-(.*)-page([0-9]+).html$ /classifieds/showmembers.php?cat=$1&page=$3 permanent; rewrite ^/classifieds/s([0-9]+)-(.*).html$ /classifieds/showmembers.php?cat=$1 permanent; } 

Which does not work. All we get when we try to visit our URLs are nginx 404s. We are still very new to nginx (and these rules are for third-party software that we cannot modify) so any pointers would be appreciated.

**Update: ** Following is some more (hopefully) useful information. When requesting a URL, the logs indicate that the 404 is happening before the rewrite takes place:

2013/03/11 10:38:18 [error] 10073#0: *13003643 open() "/home/site/public_html/classifieds/category-name-here/p1097-product.html" failed (2: No such file or directory), client: IP, server: site.com, request: "GET /classifieds/category-name-here/p1097-product.html HTTP/1.1", host: "www.site.com" 

The full configuration file is below:

server { server_name site.com www.site.com; root "/home/site/public_html"; index index.php; client_max_body_size 10m; access_log /home/site/_logs/access.log; error_log /home/site/_logs/error.log; location /classifieds/ { rewrite ^/classifieds/(.*)/p([0-9]+)-(.*)-page([0-9+]).html$ /classifieds/showproduct.php?product=$2&cpage=$4 permanent; rewrite ^/classifieds/(.*)/p([0-9]+)-(.*).html$ /classifieds/showproduct.php?product=$2 permanent; rewrite ^/classifieds/(.*)/p([0-9]+).html$ /classifieds/showproduct.php?product=$2 permanent; rewrite ^/classifieds/g([0-9]+)-(.*)-page([0-9]+).html$ /classifieds/showcat.php?cat=$1&page=$3 permanent; rewrite ^/classifieds/g([0-9]+)-(.*).html$ /classifieds/showcat.php?cat=$1 permanent; rewrite ^/classifieds/(.*)/index([0-9]+)-([0-9]+).html$ /classifieds/index.php?cat=$2&page=$3 permanent; rewrite ^/classifieds/(.*)/index([0-9]+).html$ /classifieds/index.php?cat=$2 permanent; rewrite ^/classifieds/m([0-9]+)-(.*)-protype([0-9]+).html$ /classifieds/member.php?uid=$1&protype=$3 permanent; rewrite ^/classifieds/m([0-9]+)-(.*).html$ /classifieds/member.php?uid=$1 permanent; rewrite ^/classifieds/board.html$ /classifieds/board.php permanent; rewrite ^/classifieds/b([0-9]+)-(.*).html$ /classifieds/board.php?msg=$1 permanent; rewrite ^/classifieds/u([0-9]+)-(.*)-page([0-9]+).html$ /classifieds/showcat.php?ppuser=$1&page=$3 permanent; rewrite ^/classifieds/u([0-9]+)-(.*).html$ /classifieds/showcat.php?ppuser=$1 permanent; rewrite ^/classifieds/s([0-9]+)-(.*)-page([0-9]+).html$ /classifieds/showmembers.php?cat=$1&page=$3 permanent; rewrite ^/classifieds/s([0-9]+)-(.*).html$ /classifieds/showmembers.php?cat=$1 permanent; } location / { try_files $uri $uri/ /index.php$uri?$args; } location ~ "^(.+\.php)($|/)" { fastcgi_split_path_info ^(.+\.php)(.*)$; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_param PATH_INFO $fastcgi_path_info; fastcgi_param SERVER_NAME $host; if ($uri !~ "^/uploads/") { fastcgi_pass 127.0.0.1:9006; } include fastcgi_params; } location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ { expires max; log_not_found off; access_log off; } location ~* \.(html|htm)$ { expires 30m; } location ~* /\.(ht|git|svn) { deny all; } }