Hello,
My first guess is
http://www.postfix.org/DEBUG_README.html#no_chroot
Sorry, wrong guess. Your test program is not a policy server. You need
something that listens on a unix or tcp socket. An incomplete list of
available policy servers can be found here:
http://www.postfix.org/addon.html#policy
I see. So the example given in the online documentation can't work, and
the more complete, apparently self-sufficient example greylist.pl given in
postfix' source code can't work either. That's disturbing :-) But okay, I
had a look at Postgrey's source code and it does indeed communicate
through a socket, a feature that is definitely missing from what I tried.
I'll give it another go in a few weeks.
Thanks!
Sébastien.