I have a VPS running CentOS7 with DirectAdmin installed and followed the DKIM installation guide provided by DirectAdmin. This process created the public and private key files for all domains under /etc/virtual/<<domainname>> and set up the x._domainkey DNS records for each domain. The keys generated appear to be identical across all domains, which I believe is expected for a single DirectAdmin installation.
However, DKIM is only successfully validating for one domain. All domains are configured similarly with the correct DNS records, and the public and private keys are present under /etc/virtual/. Despite using several DKIM checking tools, I haven’t been able to pinpoint the issue. I’m looking for guidance on how to resolve this. Below are two email messages sent from the server to Gmail one from a domain where DKIM passes and one where it does not.
PASSED:
Delivered-To: myreceiving@email.com
Received: by 2002:a02:ce91:0:0:0:0:0 with SMTP id y17csp2268787jaq;
Thu, 20 Jun 2019 11:43:43 -0700 (PDT)
X-Google-Smtp-Source: APXvYqyHWv1IyFDou2UEbJDsI9lCO3ZPlvpivf+SDaxLWu/cMEnb84nA/g1V1peehYrxE8GyMn2W
X-Received: by 2002:adf:df10:: with SMTP id y16mr5120122wrl.302.1561056223289;
Thu, 20 Jun 2019 11:43:43 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1561056223; cv=none;
d=google.com; s=arc-20160816;
b=YGthbOIVg+Q8cdwD4QfD7hee1lXwGlZArgn6KWWoVadp7hpYSHEycZuQAW6+WqNLCF
G9h/1i5sSqO/grOs0Bus95lfwrjL4dt+PkcsutD6TcFntRK9mZPSiWWxdYwPys67wUOD
bUHqp5JACm/9qEteyJZ64NizIugYvXvZtvaEK2jBVkuP2GUIiF8I/shwYVL1Xx2nWTzm
xzXQ9U1LaBS1vyHD2PehKIDZ6dnB+PErHwH0HK9811yEcZJiHtlGvfomFiNZKBUZix/c
jUcc0Cr1E6DMs/b6+tftYe6ZjgJZ1ZK4Z7KvxuVXd1gC34TiaQ9vOsYyBD6R1mH0p3ue
N/ig==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
h=user-agent:message-id:organization:subject:to:from:date
:mime-version:dkim-signature;
bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=;
b=T9/ZKb6Gf4vnAsVi7s9pAxnrwAHu8FiIPnQXoq/3+CYXvfxhqJLC9NUr4H1shrsHci
Tlzjpa0xomErl9bqHg/jNfkB2MQTD891U50F3UQqyCd4hGSW4t2qoEEphanaLOGCeb8q
y82B6nFlTlofbCCgyJT/m2NBtZd3mS9B5ePiE1uAAwTzSxmftAHgJy+QIyy/ARB1OU3j
DZj8L4hZDSy2MGDHtcOXCSPSlKzdcDWGQSVYnQOmLxtZceAb6VlmKunO2SBar6pW317b
iDsUx4YCzT3aXeBA+hXoFXavnvIbEF7V67oJH5Da5rZqQjq2GMkpiVvK4tHfc672aBGl
oUGw==
ARC-Authentication-Results: i=1; mx.google.com;
dkim=pass header.i=@solidewebservices.com header.s=x header.b=FI2O1Fs2;
spf=pass (google.com: domain of mypassingsending@email.com designates 212.237.233.121 as permitted sender) smtp.mailfrom=mypassingsending@email.com;
dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=solidewebservices.com
Return-Path: <mypassingsending@email.com>
Received: from 14a8e.k.buycheapvps.cloud (14a8e.k.buycheapvps.cloud. [212.237.233.121])
by mx.google.com with ESMTPS id h6si320983wrh.198.2019.06.20.11.43.42
for <myreceiving@email.com>
(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
Thu, 20 Jun 2019 11:43:42 -0700 (PDT)
Received-SPF: pass (google.com: domain of mypassingsending@email.com designates 212.237.233.121 as permitted sender) client-ip=212.237.233.121;
Authentication-Results: mx.google.com;
dkim=pass header.i=@solidewebservices.com header.s=x header.b=FI2O1Fs2;
spf=pass (google.com: domain of mypassingsending@email.com designates 212.237.233.121 as permitted sender) smtp.mailfrom=mypassingsending@email.com;
dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=solidewebservices.com
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=solidewebservices.com; s=x; h=Message-ID:Subject:To:From:Date:MIME-Version: Sender:Reply-To:Cc:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=; b=FI2O1Fs2n3AJn8+tZNq98+ij7X AwzN0C9MEbz/+Ie9cF1GjJwlWJBmMIt9hSnGsqOIvY9tDh5+lO+hYQ30azEcUoVltTIKAXKzJLEkQ BlNOxRi5kiqoRQsa2Nz1hAuSuI3B+ON1/brd9hhi6qWEbbAOm71K5OjT1AUU09tlOwSuStwPQTyf/ dHNkFsxS8FdVIZGC5x5AZEgxvbR3I6AB46/e6tykWAagbb3JvhVlZp1d1/rQpiac3OaISc9oz4bSs 6Xmp9QqiuQ0NZ8gOVNmTqzQKkbY6Rp6PhJFpmUhMG6Jfok1+Htt//TNT4/08VCpWaGVnuVs+kxx1j UpYemNIw==;
Received: from localhost ([127.0.0.1] helo=14a8e.k.buycheapvps.cloud) by 14a8e.k. buycheapvps.cloud with esmtpa (Exim 4.92) (envelope-from <mypassingsending@email.com>) id 1he22A-0002dZ-Dl for myreceiving@email.com; Thu, 20 Jun 2019 20:43:42 +0200
MIME-Version: 1.0
Date: Thu, 20 Jun 2019 20:43:42 +0200
From: Solide Webservices <mypassingsending@email.com>
To: myreceiving@email.com
Subject: test
Organization: Solide Webservices
Message-ID: <24ff6b4d81fd481b604492cf75590c89@solidewebservices.com>
X-Sender: mypassingsending@email.com
User-Agent: Roundcube Webmail/1.3.9
X-Authenticated-Id: mypassingsending@email.com
NOT PASSED:
Delivered-To: myreceiving@email.com
Received: by 2002:a02:ce91:0:0:0:0:0 with SMTP id y17csp2343515jaq;
Thu, 20 Jun 2019 13:10:53 -0700 (PDT)
X-Google-Smtp-Source: APXvYqz+fIS4qGLW+hrfdsjyrObjYJbYiY/aeD1AeuV1QVj4UdQmLRuwTy3MrSQ9r5vN3t0qCSLn
X-Received: by 2002:a5d:4703:: with SMTP id y3mr34728943wrq.35.1561061453625;
Thu, 20 Jun 2019 13:10:53 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1561061453; cv=none;
d=google.com; s=arc-20160816;
b=FFDByHJnnHPgtnFoMi/1dA0/05Hg7kRgcWoHh40n/XgkimjHJwmiebPm5vkBuH+F+j
nH7DcAvwWJtYtAGkN/oDoHxhef4Nps0NqRHG+ib4l5ewcE+iLjW7U/pPyZQs05iYyyWJ
LmOtYjUXSBKxyKqTKetuItHTeKZ9HKS39+Wl1EpCoLQ/lT+imwhQGWxO0pvyYXwBXkvM
ebYl8et1W1BCScdgO0wSbSbIuuRJJtfRV4NY6UfUICTFXHkOJYGJ3ml/EVVhGecxhID4
gPPgdh0XEj93Qq89ywbSRmEni+HzKIz9+bzLu30Bv6QpH7VxjRZzuhg5KnoAY6NJqev2
eoEw==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
h=user-agent:message-id:subject:to:from:date:mime-version
:dkim-signature;
bh=47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=;
b=hkvw342b7xF58oUmSGPkjH7SgSQ3LwQJCzdRYOMc/UHhUpbR4qfwqXthn91pgoKpCQ
h6MHNQloNkVWc27BfU5gbqTB19HJMqxtXh4xVFsplY1OItm+zAmIuVgn2yX7mnBs9hvE
+xverurh7q2K7n4Slg9bszBnU1yFRqn+njfVYcWqiPi4Zp8YItavWQEa2Z9xWwkuA8Zy
3WylUZK3e1weYNPskawQ0FaqYbYA0/XRa8FBqU8FwyWlL/F9J1npd8+Gg8JnNi+NVjgm
0OiNRIf3nzXw//VS8eNOK0FpPNRxvt3aTLX1IX3p3EtSVbpc7kBkkRmO/ROrml7uoIL0
tTBg==
ARC-Authentication-Results: i=1; mx.google.com;
dkim=fail header.i=@jelger-en-leonie.info header.s=x header.b=P4Jz89OE;
spf=pass (google.com: domain of myfailingsending@email.com designates 212.237.233.121 as permitted sender) smtp.mailfrom=myfailingsending@email.com;
dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=jelger-en-leonie.info
Return-Path: <myfailingsending@email.com>
Received: from 14a8e.k.buycheapvps.cloud (14a8e.k.buycheapvps.cloud. [212.237.233.121])
