You misunderstood - the second run of spamassassin is run
when the message is delivered to the user - at most 5-6
seconds after the milter is called.

To me this means that the razor checks should trigger on
the milter run - so I can only assume there is some missing
information from the email that is sent to spamassassin by
the milter.

Also the scores are higher on the second run of
spamassassin - meaning it triggers on more entries on the
second run - again as if the milter is missing information
from the added headers.

Spamassassin is never run manually at the site (except by
silly users whose emails whinging about things are ignored
by me - usually with a "spamassassin is run globally at
delivery time - that information is the only information
that counts").

Actually, I was meaning that the missing date information
causes score differences, as well as the missing message_id
header.

Rather than post this in the bugs list, this looked like
the better place... I'm basically just tracking down every
visible difference at the moment between a run of
spamassassin from the milter and a run from procmail.  The
scores are always lower when run from the milter as opposed
to when run from procmail.

Also the razor checks are not hitting when spamassassin is
run from the milter - not sure why this is the case though,
if you need a test message for this - I can see what I can
find here.

I'm just trying to make the milter as usable a solution for
score levels as when it runs from procmail.

Also the following additional tags :-
DATE_MISSING - Add the date of the message into the headers?

As I have been starting to manually track (with
debugging from spamd) the differences in message
values between a message from spamass-milter and spamc
run as the user - I have noticed the following
differences (listed as <rule flagged in spamd> -
<possible fix>).

MSG_ID_ADDED_BY_MTA_3 - Update added headers to
include message id if message does not have a message
id already (fake it if need be - an updated
spamassassin rule can be created to check for message
id's added by spamass-milter).