RELAYCLIENT and QS_SPAMASSASSIN env vars ignored when set

I need mail from a certain host on my local network to be scanned by 
SpamAssassin.  It is my understanding that it's possible to force 
SpamAssassin to check mail from a local machine by setting
QS_SPAMASSASSIN="1" for the appropriate host entry in the tcp.smtp 
file.  In addition, setting the RELAYCLIENT var is also supposed to 
invoke SpamAssassin.  Accordingly, the host's entry looks like this:

207.xxx.xxx.xxx:allow,RELAYCLIENT="1",QS_SPAMASSASSIN="1",QMAILQUEUE="/var/qmail/bin/qmail-scanner-queue.pl"

Naturally, the CDB file was rebuilt with "tcprules tcp.smtp.cdb 
tcp.smtp.tmp < tcp.smtp."

However, mail sent from this host is still not scanned, although mail 
from non-local hosts are scanned properly.  Qmail-Scanner seems to be 
ignoring the set variables, which is most puzzling.  Any thoughts on 
this matter would be most welcome.


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