my qmail is an open relay

["Hanz" <hanzy@info.com.ph>]

I configured qmail and did some test...

....................
telnet my.qmail_server.org 25
220 my.qmail_server.org ESMTP
helo dude
250 my.qmail_server.org
mail from: nouser@nodomain.com
250 ok
rcpt to: auser@yahoo.com
250 ok
data
354 go ahead
....................


i then edited my /etc/tcp.smtp and left the ff lines only..
127.:allow,RELAYCLIENT=""


now when i do the ff:
....................
telnet my.qmail_server.org 25
220 my.qmail_server.org ESMTP
helo dude
250 my.qmail_server.org
mail from: nouser@nodomain.com
250 ok
rcpt to: auser@yahoo.com
553 sorry, that domain isn't in my list of allowed rcpthosts
....................

does this mean that im not an open relay anymore? the thing is that it still
accepts mail when
a) mail from: me@qmail_server.org
b) rcpt to: a_user@qmail_server.org

is this ok... is this the natural behavior of a qmail smtp server? if not
how do i disable it