Любое совпадение.

http {
map $request:$http_referer:$uri $confirm {
"~^/mail_confirm/:/mydomain-e.com/mail_confirm/:mail_confirm" 1;
default 0;
}

server {

listen *:443 ssl spdy;
server_name mydomain.com www.mydomain.com;

ssl on;
ssl_certificate /ssl/mydomain.com.crt;
ssl_certificate_key /ssl/mydomain.com.key;
ssl_session_timeout 16m;



ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;

# access_log /var/log/nginx/mydomain.access.log main;
# access_log /var/log/nginx/mydomain.access.cf.log cf_custom;
error_log /var/log/nginx/mydomain.error.log;
access_log /var/log/nginx/mydomain.access_confirm.log main if=$confirm;

location ~* ^.+\.(jpg|jpeg|gif|png|ico|js|css)$ {
add_header cache-control "max-age=3600, must-revalidate";
}

location /server-status {
stub_status on;
}

root /www/mydomain.com;
index index.html index.htm index.php;

if (!-e $request_filename) {
rewrite ^ /index.php last;
}
location /refac {
if (!-e $request_filename) {
rewrite ^ /refac/index.php last;
}
}

location ~ \.php$ {
include php.domain.conf;
}

location ~ \.php(.*)$ {
include php.domain.conf;
}
}