>> No idea what's stripping them. I use amavisd and spamassassin, the
>> later I expect.
>
>Nope. ASF SpamAssassin does not manipulate existing headers in any way
>except for pre-existing X-Spam-* headers that it is specifically
>configured to remove. When used via amavisd or MIMEDefang or any other
>milter that loads the SA modules instead of using the spamd daemon, SA
>does not modify messages at all.
>
>What is likely happening here is that when a milter sees a message, it
>does not have the current Received header, because it has yet to be
>fully received. If you are extracting this message from that stage
>rather than after final delivery, Postfix has not yet added the Received
>header. Milters work around this by adding a synthetic Received header
>when passing the message to SA, but if you save a message out of the
>milter, you won't get that.
Bill, thank you, I'm sure you are correct. When digging for the topic, I had
read that might be the case. Alas, it's a little over my head on how to change
my setup to allow the Received headers, that is, get the message fully fed to
amavis so it gets the Received headers I mean. Or more importantly, if such a
change would have any unintended consequences. Unless you happen to know of a
guide somewhere that explains that setup that I could study?
FWIW, in my notes to myself in my master.cf, I believe I'm passing to amavisd
after pre-clean:
##########
# after pre-clean, this injects message to amavisd
#
smtp-amavis unix - - n - 3 lmtp
-o lmtp_data_done_timeout=1200
-o lmtp_send_xforward_command=yes
-o disable_dns_lookups=yes
-o max_use=20
#########
# after amavis path back into postfix
#
127.0.0.1:10025 inet n - n - - smtpd
# -o local_recipient_maps=
# -o relay_recipient_maps=
# -o smtpd_delay_reject=no
# -o mynetworks_style=host
# -o strict_rfc821_envelopes=yes
-o content_filter=
-o smtpd_delay_reject=no
-o smtpd_client_restrictions=permit_mynetworks,reject
-o smtpd_helo_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o smtpd_data_restrictions=reject_unauth_pipelining
-o smtpd_end_of_data_restrictions=
-o smtpd_restriction_classes=
-o mynetworks=127.0.0.0/8
-o smtpd_error_sleep_time=0
-o smtpd_soft_error_limit=1001
-o smtpd_hard_error_limit=1000
-o smtpd_client_connection_count_limit=0
-o smtpd_client_connection_rate_limit=0
-o
receive_override_options=no_header_body_checks,no_unknown_recipient_checks,no_milters
-o local_header_rewrite_clients=
-o smtpd_authorized_xforward_hosts=127.0.0.0/8
# Postfix 2.10 and later: specify empty smtpd_relay_restrictions.
-o smtpd_relay_restrictions=
