Incorrect ARC signature on emails

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