On Wed, 22 Apr 2020, Jeremy Harris via Exim-users wrote:
On 22/04/2020 20:10, Tom Crane via Exim-users wrote:
Now I get "ARC: no Authentication-Results header for signing" logs for
each email processed in /var/log/exim/main.log and no emails get any
ARC-* header fields added or an added "Authentication-Results:" field.
From the experimental-spec.txt file,
Caveats:
* There must be an Authentication-Results header, presumably added
by an ACL
while receiving the message, for the same ADMD, for arc_sign to
succeed.
This requires careful coordination between inbound and outbound
logic.
Is this the reason I get no ARC-* header added?
Yes
If so why is the above
add_header statement not doing so?
Did your test mail go through that ACL? Did the logwrite show in the
log?
No. I found I was missing a 'acl_smtp_data = acl_check_data' statement so
those ACLs were not being referenced. After adding it and fixing a few
syntax errors I am now getting an Authentication-Results: header added to
the top of the message containing the server's FQDN and "arc=none".
The corresponding exim logs always show "ARC_state: <none> condition =
logwrite = reason: <>".
I tried various variations of the 'warn verify = arc/pass:none:fail'
statement but none made any difference in the logwrite statement output.
Any thoughts?
Thanks
Tom
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