submission service does not rewrite Received: headers
Example, with DNS name and IPv4 address redacted.
Received: from smtp.adb-centralen.se (smtp.adb-centralen.se [193.10.5.129]) by imap.adb-centralen.se (Postfix) with ESMTP id 248C0313443 for <linus@nordberg.se>; Mon, 17 Jan 2022 16:50:20 +0100 (CET)
Received: from submit-01.torproject.org (submit-01.torproject.org [116.202.120.174])
(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
(Client CN "clientcerts/submit-01.torproject.org", Issuer "auto-ca.torproject.org" (not verified))
by smtp.adb-centralen.se (Postfix) with ESMTPS id ED53CC66945
for <linus@nordberg.se>; Mon, 17 Jan 2022 16:50:19 +0100 (CET)
Received: from besk (REDACTED-DNSNAME [REDACTED-IPV4-ADDRESS])
(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256)
(Client did not present a certificate)
(Authenticated sender: linus)
by submit-01.torproject.org (Postfix) with ESMTPSA id D0D2A80086
for <linus@nordberg.se>; Mon, 17 Jan 2022 15:50:18 +0000 (UTC)