Why this url blocked on squidguard?

[mamat_do]

Dear all ….......

In SquidGuard I make adjustments to the target tab categories:

blockExt:
(./..(asf|wm|3gp|ogg|aac|apk|big|bik|exe|com|bat|ogv|flp|cam|fla|mkv|mov|mp4|rm|yuv|wma|wmv|cab|mp3|avi|mpg|swf|mpeg|mp.|mpv|wm.|vpu))

Then the target categories applied in groups ACL
The problem is why if I click on the link below, always blocked by SquidGuard?

http://l.facebook.com/l.php?u=http%3A%2F%2Fwww.tribunnews.com%2F&h=HAQEwpIza&enc=AZMlvzs5zE2Ko8ne2PruhtgOlOkfZtT1B76qEM1CgSTXb4SJYbTvTu7U0eyynBc7wxKnLKyDGVNS6ttdnRqr13qkFCXbnp8wL4Liu8LeiEYJVAGlerGeDVId413J9fZckrzHJOj8q1z-i7mxnXXWmxtwhu9_3b-atDWZwWEa9zHBSA&s=1

And if I directly run http://www.tribunnews.com in firefox, can be accessed to well

Here redirect screen:
Request denied by CJR: 403 Forbidden
Reason: Access is forbidden, still in working hours or contains files that are blacklisted
Client address: 192.xxx.xxx.xxx
Client group: 1
Target group: blockExt
URL: http://l.facebook.com/l.php?u=http://www.tribunnews.com/

Log in SquidGuard:
Request (workingHours / blockExt / -) - GET REDIRECT

Is there in the regex is not correct, please the guidance...

Thank you for your attention.

[sebastiannielsen]

l.facebook.com/l.php?u=http%3A%2F%2Fwww.tribunnews.com%2F&h=HAQEwpIza&enc=AZMlvzs5zE2Ko8ne2PruhtgOlOkfZtT1B76qEM1CgSTXb4SJYbTvTu7U0eyynBc7wxKnLKyDGVNS6ttdnRqr13qkFCXbnp8wL4Liu8LeiEYJVAGlerGeDVId413J9fZckrzHJOj8q1z-i7mxnXXWmxtwhu9_3b-atDWZwWEa9zHBSA&s=1

The filter Thinks you're trying to download a file with .com extension (Microsoft Command file - like EXE)

The filter matches anything that is after the / and contains a dot (.) and then the list of those 3-letter extensions. Note that the // in http:// is not matched because http:// is not considered in the filter.
The / in the regexp prevent it from matching a .com domain when accessing it directly - like www.domain.com.
So the filter blocks: www.example.org/index.php?redirect=http://www.site2.com
but not
www.site2.com

(./..(asf|wm|3gp|ogg|aac|apk|big|bik|exe|com|bat|ogv|flp|cam|fla|mkv|mov|mp4|rm|yuv|wma|wmv|cab|mp3|avi|mpg|swf|mpeg|mp.|mpv|wm.|vpu))