Amavisd/smtp issue

All,=20
I have the following issue. I start amavisd and watch logs reload
postfix having configured content_filter correctly in main.cf and
added the 127.0.0.1:10025 smtpd line in master.cf. Mail comes in,
postfix hands it off to amavis which in turn does it's jub and invokes
SpamAssassin then ClamAV - lovely jubbly. However then it tries to
pass it back to postfix at 127.0.0.1:10025. This is where things stop.
I can telnet to 10024 on localhost and amavis answers. If I telnet to
10025 on localhost however I get:-

root]# telnet localhost 10025
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.


....and nothing more (ie no smtp headers/connects etc.) Thus it would
appear that despite:-
127.0.0.1:10025 inet n - n - - smtpd
-o content_filter=3D
-o local_recipient_maps=3D
-o relay_recipient_maps=3D
-o smtpd_restriction_classes=3D
-o smtpd_delay_reject=3Dno
-o smtpd_client_restrictions=3Dpermit_mynetworks,reje ct
(etc) being in my master.cf postfix is not binding to the
locahost:10025 port combo. Dunno if it's salient or not but in my
main.cf inet_interfaces is set to all - this is the only possible
issue I could think of here but if anyone else has any clues please
feel free to let me know as this is now driving me nuts!
Cheers
Si.