I'm trying to install Varnish on my site. With module everything seems to be OK. In status I get "Varnish running".
But if I look into my header I can't see Varnish.
This is my header.
Can anybody help me?

HTTP/1.1 200 OK
Date: Sat, 22 Dec 2012 18:34:32 GMT
Server: Apache
X-Powered-By: PHP/5.2.17
X-Drupal-Cache: HIT
Etag: "1356201243-1"
Content-Language: en
X-Generator: Drupal 7 (http://drupal.org)
Cache-Control: public, max-age=300
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Vary: Cookie,Accept-Encoding
Content-Encoding: gzip
Last-Modified: Sat, 22 Dec 2012 18:34:03 GMT
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=utf-8