[squid-users] cache refresh again

hi all,
i did the followwnig line to not to be cached the domain named abc.com.np

acl site urlpath_regex .abc.com.np http://i.abc.com.np
no_cache deny site

But still i am getting from cache (old pages).

And also i did

squidclient -m purge http://abc.com.np/

it gives error like:

----
<P>
Access control configuration prevents your request from
being allowed at this time.  Please contact your service provider if
you feel this is incorrect.
</UL>
<P>Your cache administrator is <A HREF="mailto:root">root</A>.
----
Help what i have 2 do to remove my defined cache pages.
Thanks in Advance.
Paras pradhan
Systems Dept.
Bajranet PVT LTD
Kathmandu
Nepal.