Сменил IP и сайт упал

<Directory /var/www/site/data/www/site.com>
Options -ExecCGI -Includes
php_admin_value open_basedir "/var/www/site/data:."
php_admin_flag engine on
</Directory>

<VirtualHost 188.02.66.168:81 >
ServerName site.com
AssignUserID site site
CustomLog /var/www/httpd-logs/site.com.access.log combined
DocumentRoot /var/www/site/data/www/site.com
ErrorLog /var/www/httpd-logs/site.com.error.log
ServerAdmin site@gmail.com
ServerAlias www.site.com
AddType application/x-httpd-php .php .php3 .php4 .php5 .phtml
AddType application/x-httpd-php-source .phps
php_admin_value open_basedir "/var/www/site/data:."
php_admin_value sendmail_path "/usr/sbin/sendmail -t -i -f site@gmail.com"
php_admin_value upload_tmp_dir "/var/www/site/data/mod-tmp"
php_admin_value session.save_path "/var/www/site/data/mod-tmp"
</VirtualHost>

server {
server_name site.com www.site.com;
listen 188.02.66.168;
disable_symlinks if_not_owner from=$root_path;
set $root_path /var/www/site/data/www/site.com;

location ~* ^.+\.(jpg|jpeg|gif|png|svg|js|css|mp3|ogg|mpe?g|avi|zip|gz|bz2?|rar|swf|ico|txt)$ {
root $root_path;
expires 30d;
access_log /var/www/httpd-logs/site.com.access.log ;
access_log /var/www/nginx-logs/site isp;
error_page 404 = @fallback;
}
location / {
limit_req zone=lphp burst=10 nodelay;
access_log /var/log/nginx/php.log main;
proxy_pass http://188.02.66.168:81;
proxy_redirect http://188.02.66.168:81/ /;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Real-IP $remote_addr;
}
location ~* ^/(webstat|awstats|webmail|myadmin|pgadmin)/ {
proxy_pass http://188.02.66.168:81;
proxy_redirect http://188.02.66.168:81/ /;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Real-IP $remote_addr;
}
location @fallback {
proxy_pass http://188.02.66.168:81;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Real-IP $remote_addr;
}
location ~* ^.+\.(jpg|jpeg|gif|png|svg|js|css|mp3|ogg|mpe?g|avi|zip|gz|bz2?|rar|swf)$ {
root $root_path;
access_log /var/www/nginx-logs/site isp;
access_log /var/www/httpd-logs/site.com.access.log ;
error_page 404 = @fallback;
}
include /usr/local/ispmgr/etc/nginx.inc;
}