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Thread: DKIM bad signature

  1. #1
    Join Date
    Nov 2007
    Location
    Belgium
    Posts
    20

    DKIM bad signature

    Hello,

    I'm seeing different topics concerning a DKIM bad signature but none of them seem to be related what I'm experiencing.

    A friend of me was sending some emails through an own created application and saw in Outlook that the DKIM failed (signature did not verify), using my smtp server with an authenticated email account on the server.
    I was just doing some tests, but in a simple way that I'm sending an email via a smartphone and the Roundcube web application.

    When I'm sending an email via the smartphone (Android 7.0) the email has a bad DKIM signature. The email account is configured an IMAP account (also tried with POP3) and the SMTP server is also set with authentication.
    If I'm sending via Roundcube I have a valid DKIM signature.

    I did the test by using http://www.appmaildev.com/en/dkim
    The reports below:
    Email sent via smartphone:
    Code:
    ============================================================================
    This is SPF/DKIM/DMARC/RBL report generated by a test tool provided 
    	by AdminSystem Software Limited.
    
    Any problem, please contact support@emailarchitect.net
    ============================================================================
    Report-Id: 0af4b974
    Sender: hello@maartenvisser.be
    Source-IP: 136.144.141.147
    Validator-Version: 1.05
    ============================================================================
    Original email header:
    
    x-sender: hello@maartenvisser.be
    x-receiver: test-0af4b974@appmaildev.com
    Received: from server1.domain.be ([136.144.141.147]) by appmaildev.com with Microsoft SMTPSVC(8.5.9600.16384);
    	 Mon, 4 Dec 2017 22:17:21 +0000
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Content-Type:MIME-Version:To:From:Subject:Date:
    	Sender:Reply-To:Message-ID:Cc: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=BoJc97aAu+x3oL4kKQPVQki/plopxCmangdzmg+XEbI=; b=BkqZ3tVzF0PHncNbIol7FsbpU6
    	nXOg++CZ0fS/WRs2m4lQxeu8PnnmaqoPa/J3zmZuML1hp5n2GW7Er2ut/9puw56xBTAr6uqvaYl6p
    	lIUSnnq2y+YLZJ4o66yidZU4T/5BKWw+pH9waTLQHuHHZdnvBYdbHrcWgTIn91uzAaSvkb0Ix9Twb
    	iP/yRZanBEQ36Zp/5Nk11Zf0HmMn5SCbUGbHvH4yA0GOI3Kpn7AZ42kdiDtacBqXc5YFQeb9qGG85
    	0XqtHxha/LSDO5ewDulcFPK7i8msMJFvx0kgnkOgi/Gt+gD8nDgXRIrXtzsaFYhE1pcz7yI18Ovaw
    	W4KxzrRg==;
    Received: from [109.143.4.21]
    	by server1.domain.be with esmtpa (Exim 4.89_1)
    	(envelope-from <hello@maartenvisser.be>)
    	id 1eLz3A-0004Lz-6Z
    	for test-0af4b974@appmaildev.com; Mon, 04 Dec 2017 23:17:20 +0100
    Date: Mon, 04 Dec 2017 23:17:15 +0100
    Subject: Test
    Importance: normal
    From: hello <hello@maartenvisser.be>
    To: test-0af4b974@appmaildev.com
    MIME-Version: 1.0
    Content-Type: multipart/alternative; boundary="--_com.*******.android.email_494015834094300"
    X-Authenticated-Id: hello@maartenvisser.be
    Return-Path: hello@maartenvisser.be
    Message-ID: <VMSA018QvhnyTxAGCoR00000158@appmaildev.com>
    X-OriginalArrivalTime: 04 Dec 2017 22:17:21.0577 (UTC) FILETIME=[A79B7990:01D36D4D]
    
    ============================================================================
    SPF: Pass
    ============================================================================
    
    SPF-Record: v=spf1 a mx ip4:136.144.141.147 -all
    Sender-IP:136.144.141.147
    Sender-Domain:maartenvisser.be
    
    Query TEXT record from DNS server for: maartenvisser.be
    [TXT]: v=spf1 a mx ip4:136.144.141.147 -all
    Parsing SPF record: v=spf1 a mx ip4:136.144.141.147 -all
    
    Mechanisms: v=spf1
    
    Mechanisms: a
    Testing mechanism a
    Query A record from DNS server for: maartenvisser.be
    [A]: 136.144.141.147
    Testing CIDR: source=136.144.141.147;  136.144.141.147/128
    a hit, Qualifier: +
    
    ============================================================================
    DKIM: fail
    ============================================================================
    
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Content-Type:MIME-Version:To:From:Subject:Date:
    	Sender:Reply-To:Message-ID:Cc: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=BoJc97aAu+x3oL4kKQPVQki/plopxCmangdzmg+XEbI=; b=BkqZ3tVzF0PHncNbIol7FsbpU6
    	nXOg++CZ0fS/WRs2m4lQxeu8PnnmaqoPa/J3zmZuML1hp5n2GW7Er2ut/9puw56xBTAr6uqvaYl6p
    	lIUSnnq2y+YLZJ4o66yidZU4T/5BKWw+pH9waTLQHuHHZdnvBYdbHrcWgTIn91uzAaSvkb0Ix9Twb
    	iP/yRZanBEQ36Zp/5Nk11Zf0HmMn5SCbUGbHvH4yA0GOI3Kpn7AZ42kdiDtacBqXc5YFQeb9qGG85
    	0XqtHxha/LSDO5ewDulcFPK7i8msMJFvx0kgnkOgi/Gt+gD8nDgXRIrXtzsaFYhE1pcz7yI18Ovaw
    	W4KxzrRg==;
    Signed-by: hello@maartenvisser.be
    Expected-Body-Hash: BoJc97aAu+x3oL4kKQPVQki/plopxCmangdzmg+XEbI=
    Public-Key: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnEhWhz6bB58lwQN9zPlsxBsGGQJzjwLvcWm7/2xGQ6YSYxzvzArpekknhDu53xWIgN/dAoh72Dyqh0V6HTOk1v9P6zWcabK79EC8lE53tJh93mXea4BXnhl0j/VVygMiwRyQJ0b35OANQgNcWquZePvwSLKhYeJCY5BVT4QKIn6cVLCUs9NEWnKPwI+1CSFF9Q6AEpvAooFL4hKKT4Zcsxxxaecu9EdwRgvVUGr5Dtl6+5zMw3SErvtNM/7Gp7UAwJTcsnWsnlUv1guC68P2LyGvitSSQSkQCKn5nHV5s//X9dqgu6CAIyHZTSsvz9MhohnsU9GYwwNgO7ZhAWkvNQIDAQAB;
    
    DKIM-Result: fail (bad signature)
    
    ============================================================================
    DMARC: none
    ============================================================================
    
    _dmarc.maartenvisser.be: Non-Record
    Received-SPF: pass (appmaildev.com: domain of hello@maartenvisser.be designates 136.144.141.147 as permitted sender) client-ip=136.144.141.147
    Authentication-Results: appmaildev.com;
        dkim=fail header.d=maartenvisser.be;
        spf=pass (appmaildev.com: domain of hello@maartenvisser.be designates 136.144.141.147 as permitted sender) client-ip=136.144.141.147;
        dmarc=none header.from=maartenvisser.be;
    
    ============================================================================
    DomainKey: none
    ============================================================================
    
    DomainKey-Result: none (no signature)
    If DKIM result is passed, you can ignore DomainKey result: none
    
    ============================================================================
    PTR: ExistsRecord
    ============================================================================
    
    Sender-IP: 136.144.141.147
    Query 147.141.144.136.in-addr.arpa
    Host: server1.domain.be
    
    ============================================================================
    RBL: NotListed
    ============================================================================
    
    bl.spamcop.net:Not Listed (OK) - http://bl.spamcop.net 
    cbl.abuseat.org:Not Listed (OK) - http://cbl.abuseat.org 
    b.barracudacentral.org:Not Listed (OK) - http://www.barracudacentral.org/rbl/removal-request 
    dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    http.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    dul.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    misc.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    smtp.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    socks.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    spam.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    web.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    zombie.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    pbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/pbl/ 
    sbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/sbl/ 
    xbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/xbl/ 
    zen.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/zen/ 
    ubl.unsubscore.com:Not Listed (OK) - http://www.lashback.com/blacklist/ 
    rbl.spamlab.com:Not Listed (OK) - http://tools.appriver.com/index.aspx?tool=rbl 
    dyna.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    noptr.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    spam.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    cbl.anti-spam.org.cn:Not Listed (OK) - http://www.anti-spam.org.cn/?Locale=en_US 
    cdl.anti-spam.org.cn:Not Listed (OK) - http://www.anti-spam.org.cn/?Locale=en_US 
    dnsbl.inps.de:Not Listed (OK) - http://dnsbl.inps.de/index.cgi?lang=en 
    drone.abuse.ch:Not Listed (OK) - http://dnsbl.abuse.ch 
    httpbl.abuse.ch:Not Listed (OK) - http://dnsbl.abuse.ch 
    korea.services.net:Not Listed (OK) - http://korea.services.net 
    short.rbl.jp:Not Listed (OK) - http://www.rbl.jp 
    virus.rbl.jp:Not Listed (OK) - http://www.rbl.jp 
    spamrbl.imp.ch:Not Listed (OK) - http://antispam.imp.ch 
    wormrbl.imp.ch:Not Listed (OK) - http://antispam.imp.ch 
    virbl.bit.nl:Not Listed (OK) - http://virbl.bit.nl	 
    rbl.suresupport.com:Not Listed (OK) - http://suresupport.com/postmaster 
    dsn.rfc-ignorant.org:Not Listed (OK) - http://www.rfc-ignorant.org/policy-dsn.php 
    spamguard.leadmon.net:Not Listed (OK) - http://www.leadmon.net/SpamGuard/ 
    dnsbl.tornevall.org:Not Listed (OK) - http://opm.tornevall.org 
    netblock.pedantic.org:Not Listed (OK) - http://pedantic.org 
    multi.surbl.org:Not Listed (OK) - http://www.surbl.org 
    ix.dnsbl.manitu.net:Not Listed (OK) - http://www.dnsbl.manitu.net 
    tor.dan.me.uk:Not Listed (OK) - http://www.dan.me.uk/dnsbl 
    rbl.efnetrbl.org:Not Listed (OK) - http://rbl.efnetrbl.org 
    dnsbl.dronebl.org:Not Listed (OK) - http://www.dronebl.org 
    access.redhawk.org:Not Listed (OK) - http://www.redhawk.org/index.php?option=com_wrapper&Itemid=33 
    db.wpbl.info:Not Listed (OK) - http://www.wpbl.info 
    rbl.interserver.net:Not Listed (OK) - http://rbl.interserver.net 
    query.senderbase.org:Not Listed (OK) - http://www.senderbase.org/about 
    bogons.cymru.com:Not Listed (OK) - http://www.team-cymru.org/Services/Bogons/ 
    csi.cloudmark.com:Not Listed (OK) - http://www.cloudmark.com/en/products/cloudmark-sender-intelligence/index 
    
    
    ============================================================================
    Original message source
    ============================================================================
    x-sender: hello@maartenvisser.be
    x-receiver: test-0af4b974@appmaildev.com
    Received: from server1.domain.be ([136.144.141.147]) by appmaildev.com with Microsoft SMTPSVC(8.5.9600.16384);
    	 Mon, 4 Dec 2017 22:17:21 +0000
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Content-Type:MIME-Version:To:From:Subject:Date:
    	Sender:Reply-To:Message-ID:Cc: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=BoJc97aAu+x3oL4kKQPVQki/plopxCmangdzmg+XEbI=; b=BkqZ3tVzF0PHncNbIol7FsbpU6
    	nXOg++CZ0fS/WRs2m4lQxeu8PnnmaqoPa/J3zmZuML1hp5n2GW7Er2ut/9puw56xBTAr6uqvaYl6p
    	lIUSnnq2y+YLZJ4o66yidZU4T/5BKWw+pH9waTLQHuHHZdnvBYdbHrcWgTIn91uzAaSvkb0Ix9Twb
    	iP/yRZanBEQ36Zp/5Nk11Zf0HmMn5SCbUGbHvH4yA0GOI3Kpn7AZ42kdiDtacBqXc5YFQeb9qGG85
    	0XqtHxha/LSDO5ewDulcFPK7i8msMJFvx0kgnkOgi/Gt+gD8nDgXRIrXtzsaFYhE1pcz7yI18Ovaw
    	W4KxzrRg==;
    Received: from [109.143.4.21]
    	by server1.domain.be with esmtpa (Exim 4.89_1)
    	(envelope-from <hello@maartenvisser.be>)
    	id 1eLz3A-0004Lz-6Z
    	for test-0af4b974@appmaildev.com; Mon, 04 Dec 2017 23:17:20 +0100
    Date: Mon, 04 Dec 2017 23:17:15 +0100
    Subject: Test
    Importance: normal
    From: hello <hello@maartenvisser.be>
    To: test-0af4b974@appmaildev.com
    MIME-Version: 1.0
    Content-Type: multipart/alternative; boundary="--_com.*******.android.email_494015834094300"
    X-Authenticated-Id: hello@maartenvisser.be
    Return-Path: hello@maartenvisser.be
    Message-ID: <VMSA018QvhnyTxAGCoR00000158@appmaildev.com>
    X-OriginalArrivalTime: 04 Dec 2017 22:17:21.0577 (UTC) FILETIME=[A79B7990:01D36D4D]
    
    ----_com.*******.android.email_494015834094300
    Content-Type: text/plain; charset=utf-8
    Content-Transfer-Encoding: base64
    
    VGVzdAoKClZlcnpvbmRlbiB2YW5hZiBtaWpuIFNhbXN1bmcgR2FsYXh5LXNtYXJ0cGhvbmUu
    
    ----_com.*******.android.email_494015834094300
    Content-Type: text/html; charset=utf-8
    Content-Transfer-Encoding: base64
    
    PGh0bWw+PGhlYWQ+PG1ldGEgaHR0cC1lcXVpdj0iQ29udGVudC1UeXBlIiBjb250ZW50PSJ0ZXh0
    L2h0bWw7IGNoYXJzZXQ9VVRGLTgiPjwvaGVhZD48Ym9keT48ZGl2PlRlc3Q8L2Rpdj48ZGl2Pjxi
    cj48L2Rpdj48ZGl2Pjxicj48L2Rpdj48ZGl2Pjxicj48L2Rpdj48ZGl2IGlkPSJjb21wb3Nlcl9z
    aWduYXR1cmUiPjxkaXYgc3R5bGU9ImZvbnQtc2l6ZTo4NSU7Y29sb3I6IzU3NTc1NyIgZGlyPSJh
    dXRvIj5WZXJ6b25kZW4gdmFuYWYgbWlqbiBTYW1zdW5nIEdhbGF4eS1zbWFydHBob25lLjwvZGl2
    PjwvZGl2PjwvYm9keT48L2h0bWw+
    
    ----_com.*******.android.email_494015834094300--
    
    ============================================================================
    Email sent via Roundcube:
    Code:
    ============================================================================
    This is SPF/DKIM/DMARC/RBL report generated by a test tool provided 
    	by AdminSystem Software Limited.
    
    Any problem, please contact support@emailarchitect.net
    ============================================================================
    Report-Id: cdbe8932
    Sender: hello@maartenvisser.be
    Source-IP: 136.144.141.147
    Validator-Version: 1.05
    ============================================================================
    Original email header:
    
    x-sender: hello@maartenvisser.be
    x-receiver: test-cdbe8932@appmaildev.com
    Received: from server1.domain.be ([136.144.141.147]) by appmaildev.com with Microsoft SMTPSVC(8.5.9600.16384);
    	 Mon, 4 Dec 2017 21:47:34 +0000
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Message-ID:Subject:To:From:Date:
    	Content-Transfer-Encoding:Content-Type:MIME-Version:Sender:Reply-To:Cc:
    	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=g3zLYH4xKxcPrHOD18z9YfpQcnk/GaJedfustWU5uGs=; b=MRmJwtGMSXC+SlfFIp0Sipzul
    	VJ+Wx7jHVQQi22DMGfABArw9WOyWV7qxXIeBHPlYH/j+LZJ+UPS2UBNVSu4wbpqr1Vy0Y4Da/1u+U
    	r9uRG+dhbYlam3OXulwK8dPM+Q0OPMittX/v3r0EH9NFmmB0Be04xG2R+ddoYm14fzHHxmvNuWSub
    	riAp3I/vXr76ZyGeGiCi484dBBc6/+6BmlEe7zIjF0AqR8yHbIC2G+qiqEocySgjB1wN2wSmaYbLT
    	6Z63OdJM5wAwtFkw6Kr8YG4novV7BhjJOFOrnpMXlfax4Vr+nx8PJN9jEGEUDTeCM+KyZNhslQ8fg
    	t5yl+mFLA==;
    Received: from localhost ([127.0.0.1] helo=server1.domain.be)
    	by server1.domain.be with esmtpa (Exim 4.89_1)
    	(envelope-from <hello@maartenvisser.be>)
    	id 1eLyaL-0006k5-C5
    	for test-cdbe8932@appmaildev.com; Mon, 04 Dec 2017 22:47:33 +0100
    MIME-Version: 1.0
    Content-Type: text/plain; charset=US-ASCII;
     format=flowed
    Content-Transfer-Encoding: 7bit
    Date: Mon, 04 Dec 2017 22:47:32 +0100
    From: hello@maartenvisser.be
    To: test-cdbe8932@appmaildev.com
    Subject: test
    Message-ID: <442510f6bf9948d5e82d0e3dc45cb731@maartenvisser.be>
    X-Sender: hello@maartenvisser.be
    User-Agent: Roundcube Webmail/1.3.3
    X-Authenticated-Id: hello@maartenvisser.be
    Return-Path: hello@maartenvisser.be
    X-OriginalArrivalTime: 04 Dec 2017 21:47:34.0529 (UTC) FILETIME=[7E719710:01D36D49]
    
    ============================================================================
    SPF: Pass
    ============================================================================
    
    SPF-Record: v=spf1 a mx ip4:136.144.141.147 -all
    Sender-IP:136.144.141.147
    Sender-Domain:maartenvisser.be
    
    Query TEXT record from DNS server for: maartenvisser.be
    [TXT]: v=spf1 a mx ip4:136.144.141.147 -all
    Parsing SPF record: v=spf1 a mx ip4:136.144.141.147 -all
    
    Mechanisms: v=spf1
    
    Mechanisms: a
    Testing mechanism a
    Query A record from DNS server for: maartenvisser.be
    [A]: 136.144.141.147
    Testing CIDR: source=136.144.141.147;  136.144.141.147/128
    a hit, Qualifier: +
    
    ============================================================================
    DKIM: pass
    ============================================================================
    
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Message-ID:Subject:To:From:Date:
    	Content-Transfer-Encoding:Content-Type:MIME-Version:Sender:Reply-To:Cc:
    	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=g3zLYH4xKxcPrHOD18z9YfpQcnk/GaJedfustWU5uGs=; b=MRmJwtGMSXC+SlfFIp0Sipzul
    	VJ+Wx7jHVQQi22DMGfABArw9WOyWV7qxXIeBHPlYH/j+LZJ+UPS2UBNVSu4wbpqr1Vy0Y4Da/1u+U
    	r9uRG+dhbYlam3OXulwK8dPM+Q0OPMittX/v3r0EH9NFmmB0Be04xG2R+ddoYm14fzHHxmvNuWSub
    	riAp3I/vXr76ZyGeGiCi484dBBc6/+6BmlEe7zIjF0AqR8yHbIC2G+qiqEocySgjB1wN2wSmaYbLT
    	6Z63OdJM5wAwtFkw6Kr8YG4novV7BhjJOFOrnpMXlfax4Vr+nx8PJN9jEGEUDTeCM+KyZNhslQ8fg
    	t5yl+mFLA==;
    Signed-by: hello@maartenvisser.be
    Expected-Body-Hash: g3zLYH4xKxcPrHOD18z9YfpQcnk/GaJedfustWU5uGs=
    Public-Key: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnEhWhz6bB58lwQN9zPlsxBsGGQJzjwLvcWm7/2xGQ6YSYxzvzArpekknhDu53xWIgN/dAoh72Dyqh0V6HTOk1v9P6zWcabK79EC8lE53tJh93mXea4BXnhl0j/VVygMiwRyQJ0b35OANQgNcWquZePvwSLKhYeJCY5BVT4QKIn6cVLCUs9NEWnKPwI+1CSFF9Q6AEpvAooFL4hKKT4Zcsxxxaecu9EdwRgvVUGr5Dtl6+5zMw3SErvtNM/7Gp7UAwJTcsnWsnlUv1guC68P2LyGvitSSQSkQCKn5nHV5s//X9dqgu6CAIyHZTSsvz9MhohnsU9GYwwNgO7ZhAWkvNQIDAQAB;
    
    DKIM-Result: pass
    
    ============================================================================
    DMARC: none
    ============================================================================
    
    _dmarc.maartenvisser.be: Non-Record
    Received-SPF: pass (appmaildev.com: domain of hello@maartenvisser.be designates 136.144.141.147 as permitted sender) client-ip=136.144.141.147
    Authentication-Results: appmaildev.com;
        dkim=pass header.d=maartenvisser.be;
        spf=pass (appmaildev.com: domain of hello@maartenvisser.be designates 136.144.141.147 as permitted sender) client-ip=136.144.141.147;
        dmarc=none header.from=maartenvisser.be;
    
    ============================================================================
    DomainKey: none
    ============================================================================
    
    DomainKey-Result: none (no signature)
    If DKIM result is passed, you can ignore DomainKey result: none
    
    ============================================================================
    PTR: ExistsRecord
    ============================================================================
    
    Sender-IP: 136.144.141.147
    Query 147.141.144.136.in-addr.arpa
    Host: server1.domain.be
    
    ============================================================================
    RBL: NotListed
    ============================================================================
    
    bl.spamcop.net:Not Listed (OK) - http://bl.spamcop.net 
    cbl.abuseat.org:Not Listed (OK) - http://cbl.abuseat.org 
    b.barracudacentral.org:Not Listed (OK) - http://www.barracudacentral.org/rbl/removal-request 
    dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    http.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    dul.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    misc.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    smtp.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    socks.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    spam.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    web.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    zombie.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    pbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/pbl/ 
    sbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/sbl/ 
    xbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/xbl/ 
    zen.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/zen/ 
    ubl.unsubscore.com:Not Listed (OK) - http://www.lashback.com/blacklist/ 
    rbl.spamlab.com:Not Listed (OK) - http://tools.appriver.com/index.aspx?tool=rbl 
    dyna.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    noptr.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    spam.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    cbl.anti-spam.org.cn:Not Listed (OK) - http://www.anti-spam.org.cn/?Locale=en_US 
    cdl.anti-spam.org.cn:Not Listed (OK) - http://www.anti-spam.org.cn/?Locale=en_US 
    dnsbl.inps.de:Not Listed (OK) - http://dnsbl.inps.de/index.cgi?lang=en 
    drone.abuse.ch:Not Listed (OK) - http://dnsbl.abuse.ch 
    httpbl.abuse.ch:Not Listed (OK) - http://dnsbl.abuse.ch 
    korea.services.net:Not Listed (OK) - http://korea.services.net 
    short.rbl.jp:Not Listed (OK) - http://www.rbl.jp 
    virus.rbl.jp:Not Listed (OK) - http://www.rbl.jp 
    spamrbl.imp.ch:Not Listed (OK) - http://antispam.imp.ch 
    wormrbl.imp.ch:Not Listed (OK) - http://antispam.imp.ch 
    virbl.bit.nl:Not Listed (OK) - http://virbl.bit.nl	 
    rbl.suresupport.com:Not Listed (OK) - http://suresupport.com/postmaster 
    dsn.rfc-ignorant.org:Not Listed (OK) - http://www.rfc-ignorant.org/policy-dsn.php 
    spamguard.leadmon.net:Not Listed (OK) - http://www.leadmon.net/SpamGuard/ 
    dnsbl.tornevall.org:Not Listed (OK) - http://opm.tornevall.org 
    netblock.pedantic.org:Not Listed (OK) - http://pedantic.org 
    multi.surbl.org:Not Listed (OK) - http://www.surbl.org 
    ix.dnsbl.manitu.net:Not Listed (OK) - http://www.dnsbl.manitu.net 
    tor.dan.me.uk:Not Listed (OK) - http://www.dan.me.uk/dnsbl 
    rbl.efnetrbl.org:Not Listed (OK) - http://rbl.efnetrbl.org 
    dnsbl.dronebl.org:Not Listed (OK) - http://www.dronebl.org 
    access.redhawk.org:Not Listed (OK) - http://www.redhawk.org/index.php?opt...pper&Itemid=33 
    db.wpbl.info:Not Listed (OK) - http://www.wpbl.info 
    rbl.interserver.net:Not Listed (OK) - http://rbl.interserver.net 
    query.senderbase.org:Not Listed (OK) - http://www.senderbase.org/about 
    bogons.cymru.com:Not Listed (OK) - http://www.team-cymru.org/Services/Bogons/ 
    csi.cloudmark.com:Not Listed (OK) - http://www.cloudmark.com/en/products...lligence/index 
    
    
    ============================================================================
    Original message source
    ============================================================================
    x-sender: hello@maartenvisser.be
    x-receiver: test-cdbe8932@appmaildev.com
    Received: from server1.domain.be ([136.144.141.147]) by appmaildev.com with Microsoft SMTPSVC(8.5.9600.16384);
    	 Mon, 4 Dec 2017 21:47:34 +0000
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Message-ID:Subject:To:From:Date:
    	Content-Transfer-Encoding:Content-Type:MIME-Version:Sender:Reply-To:Cc:
    	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=g3zLYH4xKxcPrHOD18z9YfpQcnk/GaJedfustWU5uGs=; b=MRmJwtGMSXC+SlfFIp0Sipzul
    	VJ+Wx7jHVQQi22DMGfABArw9WOyWV7qxXIeBHPlYH/j+LZJ+UPS2UBNVSu4wbpqr1Vy0Y4Da/1u+U
    	r9uRG+dhbYlam3OXulwK8dPM+Q0OPMittX/v3r0EH9NFmmB0Be04xG2R+ddoYm14fzHHxmvNuWSub
    	riAp3I/vXr76ZyGeGiCi484dBBc6/+6BmlEe7zIjF0AqR8yHbIC2G+qiqEocySgjB1wN2wSmaYbLT
    	6Z63OdJM5wAwtFkw6Kr8YG4novV7BhjJOFOrnpMXlfax4Vr+nx8PJN9jEGEUDTeCM+KyZNhslQ8fg
    	t5yl+mFLA==;
    Received: from localhost ([127.0.0.1] helo=server1.domain.be)
    	by server1.domain.be with esmtpa (Exim 4.89_1)
    	(envelope-from <hello@maartenvisser.be>)
    	id 1eLyaL-0006k5-C5
    	for test-cdbe8932@appmaildev.com; Mon, 04 Dec 2017 22:47:33 +0100
    MIME-Version: 1.0
    Content-Type: text/plain; charset=US-ASCII;
     format=flowed
    Content-Transfer-Encoding: 7bit
    Date: Mon, 04 Dec 2017 22:47:32 +0100
    From: hello@maartenvisser.be
    To: test-cdbe8932@appmaildev.com
    Subject: test
    Message-ID: <442510f6bf9948d5e82d0e3dc45cb731@maartenvisser.be>
    X-Sender: hello@maartenvisser.be
    User-Agent: Roundcube Webmail/1.3.3
    X-Authenticated-Id: hello@maartenvisser.be
    Return-Path: hello@maartenvisser.be
    X-OriginalArrivalTime: 04 Dec 2017 21:47:34.0529 (UTC) FILETIME=[7E719710:01D36D49]
    
    test
    ============================================================================
    I don't understand why it's a bad DKIM signature when I send an email via the smartphone.
    As far as I understand the DKIM signature is added by the exim process so its unclear why it's not working properly?
    I created the domain recently in the DirectAdmin account.
    I'm running DA 1.52.1 with CB Version: 2.0.0 (rev: 1774), Exim 4.89_1 and eximconf 4.5.7 and exim.pl v 24 on a CentOS 7 (virtual)

    Any ideas?

    Thanks in advance.

  2. #2
    Join Date
    Apr 2005
    Location
    GMT +7.00
    Posts
    12,018
    Hello,

    It seems you block incoming connections over IPv6 to 53. You should check your firewall settings for this. So try and disable your firewall (i.e. open all ports) and check whether or not DKIM sign gets verified.

    If it does not help you might need to re-create DKIM record and/or make sure public key in DNS matches the private one.

  3. #3
    Join Date
    Nov 2007
    Location
    Belgium
    Posts
    20
    Thanks for your comment zEitEr, the port was indeed closed (over IPv6) and it's now open.
    I re-created the DKIM record via the dkim_create.sh (new public key is in the report) and tested again but it's still invalid if I send an email via the smartphone.
    Via Roundcube it's still passing.

    Code:
    ============================================================================
    This is SPF/DKIM/DMARC/RBL report generated by a test tool provided 
    	by AdminSystem Software Limited.
    
    Any problem, please contact support@emailarchitect.net
    ============================================================================
    Report-Id: a89a1796
    Sender: hello@maartenvisser.be
    Source-IP: 136.144.141.147
    Validator-Version: 1.05
    ============================================================================
    Original email header:
    
    x-sender: hello@maartenvisser.be
    x-receiver: test-a89a1796@appmaildev.com
    Received: from server1.domain.be ([136.144.141.147]) by appmaildev.com with Microsoft SMTPSVC(8.5.9600.16384);
    	 Tue, 5 Dec 2017 11:28:21 +0000
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Content-Type:MIME-Version:To:From:Subject:Date:
    	Sender:Reply-To:Message-ID:Cc: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=As5BwEiDmRAMNTc3h/9WUQEOyB2Qj/TgZ5Fksy1ReXs=; b=j8UFsE2YdsIoCz0L/+r77ohuv+
    	dY+7eFrHQLKs0IaX8DTAocX03GZErteaAL5vHXQDIzVFuwHh5iDyzdv1kw7nuz5TXyDS3dtIEHcki
    	PSDvTO68X+4rEUpRBSfisKpRw6Ga+5a9FojYVau1WYe3GCmw9uYXygylIqyJ9ZymlhBmZ9HxTVSwh
    	PKdEBZqrzcvmyYUDvc/su4019Xr6kuLQEgTetfqZts0FTGG3C+gE3VSBDVJQAbe0laTBKEoL/FU2n
    	8edxYI7Qktiag+8Vlwp9KypDRGRpzyCXQLdJyNVIhWCRs1lbdJirrw1BVlSYT1IshoK0uv5WPWlAg
    	REf+4Wuw==;
    Received: from [109.133.8.213] (helo=[172.16.34.70])
    	by server1.domain.be with esmtpa (Exim 4.89_1)
    	(envelope-from <hello@maartenvisser.be>)
    	id 1eMBOd-0004yK-KM
    	for test-a89a1796@appmaildev.com; Tue, 05 Dec 2017 12:28:20 +0100
    Date: Tue, 05 Dec 2017 12:28:15 +0100
    Subject: Second
    Importance: normal
    From: hello <hello@maartenvisser.be>
    To: test-a89a1796@appmaildev.com
    MIME-Version: 1.0
    Content-Type: multipart/alternative; boundary="--_com.*******.android.email_655987137619700"
    X-Authenticated-Id: hello@maartenvisser.be
    Return-Path: hello@maartenvisser.be
    Message-ID: <VMSA01dvXJ9natci85P00000167@appmaildev.com>
    X-OriginalArrivalTime: 05 Dec 2017 11:28:21.0458 (UTC) FILETIME=[27E69B20:01D36DBC]
    
    ============================================================================
    SPF: Pass
    ============================================================================
    
    SPF-Record: v=spf1 a mx ip4:136.144.141.147 -all
    Sender-IP:136.144.141.147
    Sender-Domain:maartenvisser.be
    
    Query TEXT record from DNS server for: maartenvisser.be
    [TXT]: v=spf1 a mx ip4:136.144.141.147 -all
    Parsing SPF record: v=spf1 a mx ip4:136.144.141.147 -all
    
    Mechanisms: v=spf1
    
    Mechanisms: a
    Testing mechanism a
    Query A record from DNS server for: maartenvisser.be
    [A]: 136.144.141.147
    Testing CIDR: source=136.144.141.147;  136.144.141.147/128
    a hit, Qualifier: +
    
    ============================================================================
    DKIM: fail
    ============================================================================
    
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Content-Type:MIME-Version:To:From:Subject:Date:
    	Sender:Reply-To:Message-ID:Cc: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=As5BwEiDmRAMNTc3h/9WUQEOyB2Qj/TgZ5Fksy1ReXs=; b=j8UFsE2YdsIoCz0L/+r77ohuv+
    	dY+7eFrHQLKs0IaX8DTAocX03GZErteaAL5vHXQDIzVFuwHh5iDyzdv1kw7nuz5TXyDS3dtIEHcki
    	PSDvTO68X+4rEUpRBSfisKpRw6Ga+5a9FojYVau1WYe3GCmw9uYXygylIqyJ9ZymlhBmZ9HxTVSwh
    	PKdEBZqrzcvmyYUDvc/su4019Xr6kuLQEgTetfqZts0FTGG3C+gE3VSBDVJQAbe0laTBKEoL/FU2n
    	8edxYI7Qktiag+8Vlwp9KypDRGRpzyCXQLdJyNVIhWCRs1lbdJirrw1BVlSYT1IshoK0uv5WPWlAg
    	REf+4Wuw==;
    Signed-by: hello@maartenvisser.be
    Expected-Body-Hash: As5BwEiDmRAMNTc3h/9WUQEOyB2Qj/TgZ5Fksy1ReXs=
    Public-Key: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu6RKJ3dPHuQDrJURS8Qg3j9pLSOUp1T5ohNL/mEQvgANus0LXW92HGn4ojAsg/CeM3iabphqq+vHJe5lV0TvoncisVQl1rO/jwo5yRF9Yjf8OrOUCD+ErDFrIgU28QGeSaTCwGybQqqC1KrjJS05e5GwVR4hORwKEKgvqcnT98tAYvd6Fv1CLtbuZ2XcoU4SlAXfKo/tgXlr4Q4VkoslXiAtU3eJK/dDj57bcd7+8q4nH+O3aV4Kptd/XIiUDj3MlJNc+9L2XVyPiWdzCqlpumiyXGGuyLOO3CogQBgbpKLyYsOEy4yqYotAtXt9baV5xI6YUPA9lePNxLLLbpAW9wIDAQAB;
    
    DKIM-Result: fail (bad signature)
    
    ============================================================================
    DMARC: none
    ============================================================================
    
    _dmarc.maartenvisser.be: Non-Record
    Received-SPF: pass (appmaildev.com: domain of hello@maartenvisser.be designates 136.144.141.147 as permitted sender) client-ip=136.144.141.147
    Authentication-Results: appmaildev.com;
        dkim=fail header.d=maartenvisser.be;
        spf=pass (appmaildev.com: domain of hello@maartenvisser.be designates 136.144.141.147 as permitted sender) client-ip=136.144.141.147;
        dmarc=none header.from=maartenvisser.be;
    
    ============================================================================
    DomainKey: none
    ============================================================================
    
    DomainKey-Result: none (no signature)
    If DKIM result is passed, you can ignore DomainKey result: none
    
    ============================================================================
    PTR: ExistsRecord
    ============================================================================
    
    Sender-IP: 136.144.141.147
    Query 147.141.144.136.in-addr.arpa
    Host: server1.domain.be
    
    ============================================================================
    RBL: NotListed
    ============================================================================
    
    bl.spamcop.net:Not Listed (OK) - http://bl.spamcop.net 
    cbl.abuseat.org:Not Listed (OK) - http://cbl.abuseat.org 
    b.barracudacentral.org:Not Listed (OK) - http://www.barracudacentral.org/rbl/removal-request 
    dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    http.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    dul.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    misc.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    smtp.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    socks.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    spam.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    web.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    zombie.dnsbl.sorbs.net:Not Listed (OK) - http://www.sorbs.net 
    pbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/pbl/ 
    sbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/sbl/ 
    xbl.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/xbl/ 
    zen.spamhaus.org:Not Listed (OK) - http://www.spamhaus.org/zen/ 
    ubl.unsubscore.com:Not Listed (OK) - http://www.lashback.com/blacklist/ 
    rbl.spamlab.com:Not Listed (OK) - http://tools.appriver.com/index.aspx?tool=rbl 
    dyna.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    noptr.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    spam.spamrats.com:Not Listed (OK) - http://www.spamrats.com 
    cbl.anti-spam.org.cn:Not Listed (OK) - http://www.anti-spam.org.cn/?Locale=en_US 
    cdl.anti-spam.org.cn:Not Listed (OK) - http://www.anti-spam.org.cn/?Locale=en_US 
    dnsbl.inps.de:Not Listed (OK) - http://dnsbl.inps.de/index.cgi?lang=en 
    drone.abuse.ch:Not Listed (OK) - http://dnsbl.abuse.ch 
    httpbl.abuse.ch:Not Listed (OK) - http://dnsbl.abuse.ch 
    korea.services.net:Not Listed (OK) - http://korea.services.net 
    short.rbl.jp:Not Listed (OK) - http://www.rbl.jp 
    virus.rbl.jp:Not Listed (OK) - http://www.rbl.jp 
    spamrbl.imp.ch:Not Listed (OK) - http://antispam.imp.ch 
    wormrbl.imp.ch:Not Listed (OK) - http://antispam.imp.ch 
    virbl.bit.nl:Not Listed (OK) - http://virbl.bit.nl	 
    rbl.suresupport.com:Not Listed (OK) - http://suresupport.com/postmaster 
    dsn.rfc-ignorant.org:Not Listed (OK) - http://www.rfc-ignorant.org/policy-dsn.php 
    spamguard.leadmon.net:Not Listed (OK) - http://www.leadmon.net/SpamGuard/ 
    dnsbl.tornevall.org:Not Listed (OK) - http://opm.tornevall.org 
    netblock.pedantic.org:Not Listed (OK) - http://pedantic.org 
    multi.surbl.org:Not Listed (OK) - http://www.surbl.org 
    ix.dnsbl.manitu.net:Not Listed (OK) - http://www.dnsbl.manitu.net 
    tor.dan.me.uk:Not Listed (OK) - http://www.dan.me.uk/dnsbl 
    rbl.efnetrbl.org:Not Listed (OK) - http://rbl.efnetrbl.org 
    dnsbl.dronebl.org:Not Listed (OK) - http://www.dronebl.org 
    access.redhawk.org:Not Listed (OK) - http://www.redhawk.org/index.php?option=com_wrapper&Itemid=33 
    db.wpbl.info:Not Listed (OK) - http://www.wpbl.info 
    rbl.interserver.net:Not Listed (OK) - http://rbl.interserver.net 
    query.senderbase.org:Not Listed (OK) - http://www.senderbase.org/about 
    bogons.cymru.com:Not Listed (OK) - http://www.team-cymru.org/Services/Bogons/ 
    csi.cloudmark.com:Not Listed (OK) - http://www.cloudmark.com/en/products/cloudmark-sender-intelligence/index 
    
    
    ============================================================================
    Original message source
    ============================================================================
    x-sender: hello@maartenvisser.be
    x-receiver: test-a89a1796@appmaildev.com
    Received: from server1.domain.be ([136.144.141.147]) by appmaildev.com with Microsoft SMTPSVC(8.5.9600.16384);
    	 Tue, 5 Dec 2017 11:28:21 +0000
    DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
    	d=maartenvisser.be; s=x; h=Content-Type:MIME-Version:To:From:Subject:Date:
    	Sender:Reply-To:Message-ID:Cc: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=As5BwEiDmRAMNTc3h/9WUQEOyB2Qj/TgZ5Fksy1ReXs=; b=j8UFsE2YdsIoCz0L/+r77ohuv+
    	dY+7eFrHQLKs0IaX8DTAocX03GZErteaAL5vHXQDIzVFuwHh5iDyzdv1kw7nuz5TXyDS3dtIEHcki
    	PSDvTO68X+4rEUpRBSfisKpRw6Ga+5a9FojYVau1WYe3GCmw9uYXygylIqyJ9ZymlhBmZ9HxTVSwh
    	PKdEBZqrzcvmyYUDvc/su4019Xr6kuLQEgTetfqZts0FTGG3C+gE3VSBDVJQAbe0laTBKEoL/FU2n
    	8edxYI7Qktiag+8Vlwp9KypDRGRpzyCXQLdJyNVIhWCRs1lbdJirrw1BVlSYT1IshoK0uv5WPWlAg
    	REf+4Wuw==;
    Received: from [109.133.8.213] (helo=[172.16.34.70])
    	by server1.domain.be with esmtpa (Exim 4.89_1)
    	(envelope-from <hello@maartenvisser.be>)
    	id 1eMBOd-0004yK-KM
    	for test-a89a1796@appmaildev.com; Tue, 05 Dec 2017 12:28:20 +0100
    Date: Tue, 05 Dec 2017 12:28:15 +0100
    Subject: Second
    Importance: normal
    From: hello <hello@maartenvisser.be>
    To: test-a89a1796@appmaildev.com
    MIME-Version: 1.0
    Content-Type: multipart/alternative; boundary="--_com.*******.android.email_655987137619700"
    X-Authenticated-Id: hello@maartenvisser.be
    Return-Path: hello@maartenvisser.be
    Message-ID: <VMSA01dvXJ9natci85P00000167@appmaildev.com>
    X-OriginalArrivalTime: 05 Dec 2017 11:28:21.0458 (UTC) FILETIME=[27E69B20:01D36DBC]
    
    ----_com.*******.android.email_655987137619700
    Content-Type: text/plain; charset=utf-8
    Content-Transfer-Encoding: base64
    
    ClNlY29uZAoKVmVyem9uZGVuIHZhbmFmIG1pam4gU2Ftc3VuZyBHYWxheHktc21hcnRwaG9uZS4=
    
    ----_com.*******.android.email_655987137619700
    Content-Type: text/html; charset=utf-8
    Content-Transfer-Encoding: base64
    
    PGh0bWw+PGhlYWQ+PG1ldGEgaHR0cC1lcXVpdj0iQ29udGVudC1UeXBlIiBjb250ZW50PSJ0ZXh0
    L2h0bWw7IGNoYXJzZXQ9VVRGLTgiPjwvaGVhZD48Ym9keT48ZGl2Pjxicj48L2Rpdj48ZGl2PlNl
    Y29uZDwvZGl2PjxkaXY+PGJyPjwvZGl2PjxkaXY+PGJyPjwvZGl2PjxkaXYgaWQ9ImNvbXBvc2Vy
    X3NpZ25hdHVyZSI+PGRpdiBzdHlsZT0iZm9udC1zaXplOjg1JTtjb2xvcjojNTc1NzU3IiBkaXI9
    ImF1dG8iPlZlcnpvbmRlbiB2YW5hZiBtaWpuIFNhbXN1bmcgR2FsYXh5LXNtYXJ0cGhvbmUuPC9k
    aXY+PC9kaXY+PC9ib2R5PjwvaHRtbD4=
    
    ----_com.*******.android.email_655987137619700--
    
    ============================================================================

  4. #4
    Join Date
    Apr 2005
    Location
    GMT +7.00
    Posts
    12,018
    Possibly the same issue as reported here: https://forum.directadmin.com/showthread.php?t=55651 Richard has a guess it's related to Content-Transfer-Encoding. So we need to check it out.

  5. #5
    Join Date
    Nov 2007
    Location
    Belgium
    Posts
    20

    Question

    I'm still facing the problem and after some new searches today I found forums where they say that it could be the Message-ID.
    One thing I'm trying to understand now is indeed why in the email which is DKIM valid I can see: Message-ID: <442510f6bf9948d5e82d0e3dc45cb731@maartenvisser.be>
    And in an email with an invalid DKIM: Message-ID: VMSA018QvhnyTxAGCoR00000158@appmaildev.com>

    Additionally:
    I'm testing this also on outlook.com where I get the same DKIM results, and if you check topic https://forum.directadmin.com/showthread.php?t=55651 it also to outlook.com
    If you check the email headers in that topic you also see a different kind of Message-ID. For the valid signed emails you have a Message-ID: <[id]@[domain/host of sender]> for the invalid you have Message-ID: <[id]@[domain/host of receiver]>

    So is the Message-ID not sent in some cases or how to clarify this behavior?
    Last edited by wavoe; 12-22-2017 at 06:39 AM.

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