Blocking of Mail Sites not working (Novice User)

[Ganeshh]

Hi Lists

This could be a basic kind of query for all of you, since am doing for 
first time, please hear my scenario in line is my configuration.

I have 3 zones

restricted
open
shared

now... in restricted zone i will allow any without adults, webmail and chat

      in  open zone i want to allow any, webmail and chat without adult
             in  shared i want to allow any, webmail and chat without 
adult ( for policy purpose , its a special case zone under separate 
network)
/*
My problem is (for restricted zone, squidguard is only blocking adults 
but not webmail and others), please let me know where the error is and 
how to configure the same on above conditions.

*
/I am not sure how to use users and groups , so i have not added any of 
it./

Below is my configuration file, i have not mentioned any user or groups, 
the output


*
src restricted    {               ip          192.168.0.171-192.168.0.172
}                                                */ *src open {
        ip      192.168.0.250-192.168.0.252
     }

src shared {
   ip 192.168.0.11
}

dest webmail {
     domainlist  mail/domains
}

dest chat {
   domainlist    blacklists/chat/domains
}

dest newsportals {
    domainlist    blacklists/newsportals/domains
}

dest adult {
     domainlist      blacklists/porn/domains
     urllist         blacklists/porn/urls
     expressionlist  blacklists/porn/expressions
     redirect        
http://admin.foo.bar.no/cgi/blocked?clientaddr=%a+clientname=%n+clientident=%i+srcclas 

s=%s+targetclass=%t+url=%u
}                                        acl {

 restricted {
             pass !in-addr !webmail !chat !adult any
 }

 open {
    pass !adult !in-addr any
 }

 shared {
      pass !adult !in-addr any
 }

 default {
    pass none
 }
}*                             Kind Regards
Ganeshh