[Exim] OK I give up

I have been checking out my exim configuration and used the the
tests at: http://www.mail-abuse.org/tsi/ar-test.html

The server uses exim version 3.12 on Redhat Linux 6.1

The config file and transcript of the session are attached.
What I don't get is why test 6 fails ?

rgds
davidw

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                    Data Management And Warehousing

David M. Walker                            Tel:  +44 (0)7050 028 911
138, Finchampstead Road,  Wokingham,       Fax:  +44 (0)7050 028 912
Berkshire, RG41 2NU, United Kingdom.       Data: +44 (0)7050 028 913

http://www.datamgmt.com                   mailto:davidw@datamgmt.com
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telnet mail-abuse.org
Trying 204.152.184.74...
Connected to mail-abuse.org.
Escape character is '^]'.
Connecting to 209.102.105.222 for anonymous test ...
<<< 220 monza.datamgmt.net ESMTP Exim 3.12 #1 Sun, 02 Apr 2000 17:49:09 +0000
>>> HELO mail-abuse.org
<<< 250 monza.datamgmt.net Hello dante.mail-abuse.org [204.152.184.35]
Relay test 1
>>> RSET
<<< 250 Reset OK
>>> MAIL FROM:<spamtest@???>
<<< 250 <spamtest@???> is syntactically correct
>>> RCPT TO:<relaytest@???>
<<< 550-See http://monza.datamgmt.com/badmail.html
<<< 550 relaying to <relaytest@???> prohibited by administrator
Relay test 2
>>> RSET
<<< 250 Reset OK
>>> MAIL FROM:<spamtest>
<<< 501 <spamtest>: sender address must contain a domain
Relay test 3
>>> RSET
<<< 250 Reset OK
>>> MAIL FROM:<>
<<< 250 <> is syntactically correct
>>> RCPT TO:<relaytest@???>
<<< 550-See http://monza.datamgmt.com/badmail.html
<<< 550 relaying to <relaytest@???> prohibited by administrator
Relay test 4
>>> RSET
<<< 250 Reset OK
>>> MAIL FROM:<spamtest@???>
<<< 250 <spamtest@???> is syntactically correct
>>> RCPT TO:<relaytest@???>
<<< 550-See http://monza.datamgmt.com/badmail.html
<<< 550 relaying to <relaytest@???> prohibited by administrator
Relay test 5
>>> RSET
<<< 250 Reset OK
>>> MAIL FROM:<spamtest@???>
<<< 501 <spamtest@???>: domain literals not allowed
Relay test 6
>>> RSET
<<< 250 Reset OK
>>> MAIL FROM:<spamtest@???>
<<< 250 <spamtest@???> is syntactically correct
>>> RCPT TO:<relaytest%mail-abuse.org@???>
<<< 250 <relaytest%mail-abuse.org@???> verified
Relay test result
Uh oh, host appeared to accept a message for relay.
The host may reject this message internally, however
Connection closed by foreign host.