A particular URL is being blocked by content filtering when it should not be
First verify which categories the site belongs to by using the test-url feature in the CLI (see below). Once you know the categories you can verify whether or not you are blocking one of them.
Testing URL "www.playboy.com/"
URL found, categories: Entertainment, Nudity, Online_Sales
This can also be accomplished from the ProxySG GUI interface:
You can verify your blocked categories by examining your current policy at http://x.x.x.x:8081/Policy/Current (if an HTTP-console is configured) or https://x.x.x.x:8082/Policy/Current (if an HTTPS-console is configured).
If you feel that the website is incorrectly categorized, you can configure a temporary workaround by creating a policy entry that allows the site, and place it before the entry that would have blocked that site (see below).
You can report incorrect categorizations by going to http://sitereview.bluecoat.com/