Hello.
On the mail server, I configured addition of the
Authentication-Results header with authentication check results.
I noticed that emails from the dovecot.org server have an incorrect ARC
signature:
Authentication-Results: ...;
dkim=pass header.d=dovecot.org header.s=... header.b=...;
dkim=fail ("body hash did not verify") header.d=... header.s=... header.b=...;
arc=reject ("signature check failed: fail, {[1] = sig:dovecot.org:reject}");
spf=pass (...: domain of "dovecot-bounces+...=...@dovecot.org" designates ... as permitted sender) smtp.mailfrom="dovecot-bounces+...=...@dovecot.org";
dmarc=pass (policy=reject) header.from=dovecot.org
--
Best regards,
Lafiel Elentari
mailto:lafiel@elven.pw
Lafiel Elentari via dovecot skrev den 2026-04-25 20:30:
Authentication-Results: ...;
is not ARC
dkim=pass header.d=dovecot.org header.s=... header.b=...; dkim=fail ("body hash did not verify") header.d=...header.s=... header.b=...; arc=reject ("signature check failed: fail, {[1] = sig:dovecot.org:reject}"); spf=pass (...: domain of "dovecot-bounces+...=...@dovecot.org" designates ... as permitted sender) smtp.mailfrom="dovecot-bounces+...=...@dovecot.org"; dmarc=pass (policy=reject) header.from=dovecot.org
what software add this info ?
ARC-Authentication-Results i=1; talvi.dovecot.org; dkim=pass header.d=elven.pw header.s=h4t5sy2m header.b=s1sdcYsP; spf=pass (talvi.dovecot.org: domain of lafiel@elven.pw designates 91.216.72.209 as permitted sender) smtp.mailfrom=lafiel@elven.pw; dmarc=pass (policy=quarantine) header.from=elven.pw
Hello.
This header is added by the Rspamd spam filter: https://docs.rspamd.com/modules/milter_headers/#authentication-results
I encountered the same error when forwarding emails on another mail
server. I was able to resolve the error with this arc.conf
configuration:
...
sign_inbound = false;
sign_local = true;
use_domain_sign_local = "example.com";
...
Where example.com is the domain from which the email is forwarded.
On Saturday, April 25, 2026, 10:44:17 PM, Benny Pedersen via dovecot <dovecot@dovecot.org> wrote:
Lafiel Elentari via dovecot skrev den 2026-04-25 20:30:
what software add this info ?
-- Best regards, Lafiel Elentari mailto:lafiel@elven.pw
participants (2)
-
Benny Pedersen
-
Lafiel Elentari