Dear Amos, Thank you for your advice, Then, "Proxy-Authorization" is in "not the encapsulated message" in my 2nd mail(squid3.0 STABLE13) . I think this conforms to RFC and this is not bug, and Your opinion is also the same ? I look for the report of bugs . I guess the bug to have been corrected with STABLE2-STABLE4. Because "Proxy-Authorization" was in "the encapsulated message" at STABLE1, and not STABLE4. -------------------------------------- Power up the Internet with Yahoo! Toolbar. http://pr.mail.yahoo.co.jp/toolbar/