Milter-greylist

Hello,

I am trying to use the spamd feature
but I cannot make it to work for even a simple test e-mail.
I understand that the 4.3.8 is a development snapshot
but is that so trivially broken?
(For example the queue-id is sent as a user name for spamd.)
Is there a minimum version of spamassassin
needed to make it work?
I am using what comes with CentOS 5 by default.
 

Apr  7 16:42:01 mail sendmail[31895]: p37EfGkS031895:
from=<xxx@...>, size=22, class=0, nrcpts=1,
msgid=<201104071441.p37EfGkS031895@mail.mydomain.org>, proto=SMTP,
daemon=MTA, relay=[10.0.0.1]
Apr  7 16:42:01 mail spamd[11116]: spamd: connection from
mail.mydomain.org [127.0.0.1] at port 46440 
Apr  7 16:42:01 mail spamd[11116]: spamd: handle_user unable to find
user: 'p37EfGkS031895' 
Apr  7 16:42:01 mail spamd[11116]: spamd: still running as root: user
not specified with -u, not found, or set to root, falling back to nobody
Apr  7 16:47:01 mail sendmail[31895]: p37EfGkS031895: Milter
(milter-greylist): timeout before data read
Apr  7 16:47:01 mail sendmail[31895]: p37EfGkS031895: Milter
(milter-greylist): to error state
Apr  7 16:47:01 mail sendmail[31895]: p37EfGkS031895: Milter: data,
reject=451 4.3.2 Please try again later
Apr  7 16:47:01 mail sendmail[31895]: p37EfGkS031895:
to=<yyy@...>, delay=00:05:10, pri=30022, stat=Please try again
later
Apr  7 16:47:01 mail milter-greylist: spamd protocol version mismatch
Apr  7 16:47:01 mail milter-greylist: spamd returned non-ok
Apr  7 16:47:01 mail milter-greylist: SPAMD/1.0 79 Timeout: (300 second
timeout while trying to CHECK)^M 
Apr  7 16:47:01 mail milter-greylist: ACL evaluation failure
Apr  7 16:47:01 mail spamd[11116]: spamd: timeout: (300 second timeout
while trying to CHECK) at /usr/bin/spamd line 2016, <GEN14> line 11.

Bests,
Attila