hi all, i have squid 2.5 set up as a reverse proxy for our mail servers (to avoid having to expose our mailservers to the outside world). squid is acting only as a reverse proxy (accelerator), and I have httpd_accel_with_proxy set to off. does anyone have any advice or tips for creating the ACL's so that I can avoid having our squid be used as an open proxy? thanks so much!