Problem with PGP-signed E-Mails

T. Mohrfeldt (Liesegang GmbH) t.mohrfeldt at liesegang.sh
Thu Jun 14 08:42:59 CEST 2018


I'll try:

Mail in Sent-Folder Signature intact:

> MIME-Version: 1.0
> Content-Type: multipart/signed; protocol="application/pgp-signature";
  > micalg=pgp-sha1;
  > boundary="=_45557bc0a5e217b81ba14abed50af396"
> Date: Thu, 14 Jun 2018 08:31:12 +0200
> From: "T. Mohrfeldt (Liesegang GmbH)" <t.mohrfeldt at liesegang.sh>
> To: =?UTF-8?Q?Michael_B=C3=BCnning?= <m.buenning at liesegang.sh>
> Subject: Signature Test
> Organization: Liesegang GmbH
> Message-ID: <40a0b8f9cd43a607c27d150166a13902 at liesegang.sh>
> X-Sender: t.mohrfeldt at liesegang.sh
> User-Agent: Kolab 16/Roundcube 1.3.6
> 
> This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
> 
> --=_45557bc0a5e217b81ba14abed50af396
> Content-Type: multipart/alternative;
  > boundary="=_3cb3b50b323830e3b0e0938de5af52fb"
> 
> --=_3cb3b50b323830e3b0e0938de5af52fb
> Content-Transfer-Encoding: 8bit
> Content-Type: text/plain; charset=UTF-8
> 
> Signature Test
> 
> Mit freundlichen Grüßen
> 
> Torben Mohrfeldt
> 
> --
> 
  > LIESEGANG GMBH
> 
> Stadtweg 22 * 24837 Schleswig
> 
> Tel.: +49 (4621) 99 46 07 3
> Fax: +49 (4621) 99 46 07 0
> GPG/PGP ID: CE040A70 [1]
> 
> www.liesegang.sh [2]
> 
  > Handelsregister:
> Geschäftsführer: Amtsgericht Schleswig 1010
> Axel Böhringer, Christian Liesegang
> 
> 
> 
> Links:
> ------
> [1]
> https://keys.fedoraproject.org/pks/lookup?op=get&search=0x0E619FACCE040A70
> [2] https://buchliesegang.buchhandlung.de
> --=_3cb3b50b323830e3b0e0938de5af52fb
> Content-Transfer-Encoding: quoted-printable
> Content-Type: text/html; charset=UTF-8
> 
> <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; 
> charset=
> =3DUTF-8" /></head><body style=3D'font-size: 10pt; font-family: 
> Verdana,Gen=
> eva,sans-serif'>
> <p>Signature Test</p>
> <div>
> <p>Mit freundlichen Grüßen</p>
> <p>Torben Mohrfeldt </p>
> <p>--</p>
> <table>
> <tbody>
> <tr>
> <td valign=3D"top"><img src=3D"https://buchliesegang.com/extern/lg.png" 
> alt=
> =3D"Liesegang Logo" width=3D"100" height=3D"100" /></td>
> <td valign=3D"top"><span style=3D"font-family: verdana, geneva, 
> sans-serif;=
> "><strong>Liesegang GmbH</strong></span>
> <p><span style=3D"font-family: verdana, geneva, sans-serif;">Stadtweg 
> 22&nb=
> sp;• 24837 Schleswig</span><br /><br /><span style=3D"font-family: 
> ver=
> dana, geneva, sans-serif;">Tel.: +49 (4621) 99 46 07 3</span><br 
> /><span st=
> yle=3D"font-family: verdana, geneva, sans-serif;">Fax: +49 (4621) 99 46 
> 07 =
> 0<br />GPG/PGP ID: <a 
> href=3D"https://keys.fedoraproject.org/pks/lookup?op=
> =3Dget&search=3D0x0E619FACCE040A70">CE040A70</a></span></p>
> <p><span style=3D"color: #000000; font-family: verdana, geneva, 
> sans-serif;=
> "><a style=3D"color: #000000;" title=3D"Zum Online Shop" 
> href=3D"https://bu=
> chliesegang.buchhandlung.de">www.liesegang.sh</a> </span></p>
> </td>
> </tr>
> <tr>
> <td align=3D"right"><span style=3D"font-size: 8pt; font-family: 
> verdana, ge=
> neva, sans-serif;">Handelsregister:<br 
> />Geschäftsführer:</span><=
> /td>
> <td><span style=3D"font-size: 8pt; font-family: verdana, geneva, 
> sans-serif=
> ;"> Amtsgericht Schleswig 1010<br /> Axel Böhringer, Christian 
> Liesega=
> ng</span></td>
> </tr>
> </tbody>
> </table>
> </div>
> </body></html>
> 
> --=_3cb3b50b323830e3b0e0938de5af52fb--
> 
> 
> --=_45557bc0a5e217b81ba14abed50af396
> Content-Type: application/pgp-signature;
  > name=signature.asc
> Content-Disposition: attachment;
  > filename=signature.asc;
  > size=836
> Content-Description: OpenPGP digital signature
> 
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v2.0.22 (GNU/Linux)
> 
> iQIcBAEBAgAGBQJbIguxAAoJEA5hn6zOBApwPBIP/15i4u5ITLLfZACWosD5ZDSh
> Ano6+mVzh31Iv+d3816hpMQLGSwxW2EYxIyB3Xcjwz0/cu6Spl1F4+G/Oqt53+P6
> InqtK1qu0IY8YKEPsyPAK3QyApqTk+FJNsJOW/INEOobw4NFUXJNGAHQedQwbYz5
> QXEbWagi06mWKE+I9j9YCoapm1iG2sLA9m2ocQT7qEw1OLxmLt2kUiyaKHgnlIuX
> pTFnVpzhh4nRE6gWnhQej3glfgBmvkpjoQageIwaLFd6eOu0oaVlgzKQtVEGaElp
> ET4UXvVS3+GqhxWsLIsTVdBmLu/CIfDPzy8wDG2bYYAkOfzsCMj29OOfC9qyKP1o
> xXCDR6mp9TKdbE94hN66WCm4zB4SFhqx1YFGAf1ByC36A4fW30byKik3L5TkZwGF
> nWZV3dhUm8Yx8g4Km9scbNa6pdXCUYggOsOQnPbON4K/94zolG4XrN3asVJ490bd
> cCa8Z/vEA4eBUe0RgpuF4eGunGso9AaNGy3UdcgRH9zRKKFj3ouPGlyxTzYSAwSA
> SoqzlRCRP8m+m1HU6qu1/a9Not0jcbVTLt7xUGBzNZpYSV4E2o+iGF5KiIhGzRO+
> AFAvSK8WH0tQ28fbph3mlwvC0+3vlQe0efDPfcHP5AktF2qiR4j5nDyBAi9E+uNw
> XjJTn5vpbNK80o7De/r6
> =wefq
> -----END PGP SIGNATURE-----
> 
> --=_45557bc0a5e217b81ba14abed50af396--

Mail on the recipient's side, signature invalid:

> Return-Path: <t.mohrfeldt at liesegang.sh>
> Received: from mail.liesegang.sh ([unix socket])
	 > by mail.liesegang.sh (Cyrus 
2.5.11-41-gd53406f3f-Kolab-2.5.11-10.2.el7.kolab_16) with LMTPA;
	 > Thu, 14 Jun 2018 08:31:17 +0200
> X-Sieve: CMU Sieve 2.4
> X-Virus-Scanned: amavisd-new at liesegang.sh
> DKIM-Filter: OpenDKIM Filter v2.11.0 mail.liesegang.sh 0B9E321099
> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=liesegang.sh; 
> s=mail;
	> t=1528957877; bh=DmrErtcZr/8iddRAxMUF8SagrISXAd+t5gi8oL3jiuE=;
	> h=Date:From:To:Subject:From;
	> b=wpiMqAccyLRLIVdweqza+U3ukgrLyDIywuFhEW8rp3LYuNz9u2R+oOqcCLrgj5PTA
	 > EYWZymTh3lc5fbYLF6xx0Yh29a6IagM3e/NmN6gWky+tZrEUoNz0XyRDtQ4VNgJcwr
	 > CGYlKkYxcSGxFt4+KfmsfbiqQmr91jN5z2TbVZU0=
> DKIM-Filter: OpenDKIM Filter v2.11.0 mail.liesegang.sh D73A9210CE
> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=liesegang.sh; 
> s=mail;
  > t=1528957876; bh=8j8A9MNMC4peA6Xr6XwBzUMK/xwaaz3o3sZiLqjYkps=;
  > h=Date:From:To:Subject:From;
  > b=csclWWokCs5uTx39v3UEXiOpjODvdPqeTYKniuyVpM/bfH+StCPvVmFd4ap8HNYh2
  > P33TLUOOgmTUYwjeLGkl1Qkd0rif2yXEom1FKa+jd6ZuhVm/M4QjAMtQNAryK12KLA
  > y9+igit5P8tvAwFfuT0fVmd2WwSxR1fDTnSzN5f4=
> Authentication-Results: mail.liesegang.sh (amavisd-new);
  > dkim=pass (1024-bit key) header.d=liesegang.sh
> MIME-Version: 1.0
> DKIM-Filter: OpenDKIM Filter v2.11.0 mail.liesegang.sh 642DB21099
> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=liesegang.sh; 
> s=mail;
  > t=1528957874; bh=8j8A9MNMC4peA6Xr6XwBzUMK/xwaaz3o3sZiLqjYkps=;
  > h=Date:From:To:Subject:From;
  > b=C7j1haDeUJJE2ivYmJiCAIZQgVePyDVDq4qZdtmky1s/R2i0g8xpLaUdkSFDZPP6W
  > GaQShrXelS20IRTFmM+5IUcIK0zh0dgvSo6/fFhAM9hckmB3T+rCe/0WngirnTGgy0
  > EUU6XTyRC2sXm39ZliGhQaHT6Qyr/RE2Z504X1RU=
> Content-Type: multipart/signed; protocol="application/pgp-signature";
  > boundary="=_45557bc0a5e217b81ba14abed50af396"; micalg=pgp-sha1
> Date: Thu, 14 Jun 2018 08:31:12 +0200
> From: "T. Mohrfeldt (Liesegang GmbH)" <t.mohrfeldt at liesegang.sh>
> To: =?UTF-8?Q?Michael_B=C3=BCnning?= <m.buenning at liesegang.sh>
> Subject: Signature Test
> Organization: Liesegang GmbH
> Message-ID: <40a0b8f9cd43a607c27d150166a13902 at liesegang.sh>
> X-Sender: t.mohrfeldt at liesegang.sh
> 
> This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
> 
> --=_45557bc0a5e217b81ba14abed50af396
> Content-Type: multipart/alternative;
  > boundary="=_3cb3b50b323830e3b0e0938de5af52fb"
> 
> --=_3cb3b50b323830e3b0e0938de5af52fb
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: quoted-printable
> 
> Signature Test
> 
> Mit freundlichen Gr=C3=BC=C3=9Fen=20
> 
> Torben Mohrfeldt =20
> 
> --=20
> 
  > LIESEGANG GMBH=20
> 
> Stadtweg 22 * 24837 Schleswig
> 
> Tel.: +49 (4621) 99 46 07 3
> Fax: +49 (4621) 99 46 07 0
> GPG/PGP ID: CE040A70 [1]=20
> 
> www.liesegang.sh [2]=20
> 
  > Handelsregister:
> Gesch=C3=A4ftsf=C3=BChrer: Amtsgericht Schleswig 1010
> Axel B=C3=B6hringer, Christian Liesegang=20
> 
> =20
> 
> Links:
> ------
> [1]
> https://keys.fedoraproject.org/pks/lookup?op=3Dget&search=3D0x0E619FA=
> CCE040A70
> [2] https://buchliesegang.buchhandlung.de
> --=_3cb3b50b323830e3b0e0938de5af52fb
> Content-Transfer-Encoding: quoted-printable
> Content-Type: text/html; charset=UTF-8
> 
> <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; 
> charset=
> =3DUTF-8" /></head><body style=3D'font-size: 10pt; font-family: 
> Verdana,Gen=
> eva,sans-serif'>
> <p>Signature Test</p>
> <div>
> <p>Mit freundlichen Grüßen</p>
> <p>Torben Mohrfeldt </p>
> <p>--</p>
> <table>
> <tbody>
> <tr>
> <td valign=3D"top"><img src=3D"https://buchliesegang.com/extern/lg.png" 
> alt=
> =3D"Liesegang Logo" width=3D"100" height=3D"100" /></td>
> <td valign=3D"top"><span style=3D"font-family: verdana, geneva, 
> sans-serif;=
> "><strong>Liesegang GmbH</strong></span>
> <p><span style=3D"font-family: verdana, geneva, sans-serif;">Stadtweg 
> 22&nb=
> sp;• 24837 Schleswig</span><br /><br /><span style=3D"font-family: 
> ver=
> dana, geneva, sans-serif;">Tel.: +49 (4621) 99 46 07 3</span><br 
> /><span st=
> yle=3D"font-family: verdana, geneva, sans-serif;">Fax: +49 (4621) 99 46 
> 07 =
> 0<br />GPG/PGP ID: <a 
> href=3D"https://keys.fedoraproject.org/pks/lookup?op=
> =3Dget&search=3D0x0E619FACCE040A70">CE040A70</a></span></p>
> <p><span style=3D"color: #000000; font-family: verdana, geneva, 
> sans-serif;=
> "><a style=3D"color: #000000;" title=3D"Zum Online Shop" 
> href=3D"https://bu=
> chliesegang.buchhandlung.de">www.liesegang.sh</a> </span></p>
> </td>
> </tr>
> <tr>
> <td align=3D"right"><span style=3D"font-size: 8pt; font-family: 
> verdana, ge=
> neva, sans-serif;">Handelsregister:<br 
> />Geschäftsführer:</span><=
> /td>
> <td><span style=3D"font-size: 8pt; font-family: verdana, geneva, 
> sans-serif=
> ;"> Amtsgericht Schleswig 1010<br /> Axel Böhringer, Christian 
> Liesega=
> ng</span></td>
> </tr>
> </tbody>
> </table>
> </div>
> </body></html>
> 
> --=_3cb3b50b323830e3b0e0938de5af52fb--
> 
> 
> --=_45557bc0a5e217b81ba14abed50af396
> Content-Type: application/pgp-signature;
  > name=signature.asc
> Content-Disposition: attachment;
  > filename=signature.asc;
  > size=836
> Content-Description: OpenPGP digital signature
> 
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v2.0.22 (GNU/Linux)
> 
> iQIcBAEBAgAGBQJbIguxAAoJEA5hn6zOBApwPBIP/15i4u5ITLLfZACWosD5ZDSh
> Ano6+mVzh31Iv+d3816hpMQLGSwxW2EYxIyB3Xcjwz0/cu6Spl1F4+G/Oqt53+P6
> InqtK1qu0IY8YKEPsyPAK3QyApqTk+FJNsJOW/INEOobw4NFUXJNGAHQedQwbYz5
> QXEbWagi06mWKE+I9j9YCoapm1iG2sLA9m2ocQT7qEw1OLxmLt2kUiyaKHgnlIuX
> pTFnVpzhh4nRE6gWnhQej3glfgBmvkpjoQageIwaLFd6eOu0oaVlgzKQtVEGaElp
> ET4UXvVS3+GqhxWsLIsTVdBmLu/CIfDPzy8wDG2bYYAkOfzsCMj29OOfC9qyKP1o
> xXCDR6mp9TKdbE94hN66WCm4zB4SFhqx1YFGAf1ByC36A4fW30byKik3L5TkZwGF
> nWZV3dhUm8Yx8g4Km9scbNa6pdXCUYggOsOQnPbON4K/94zolG4XrN3asVJ490bd
> cCa8Z/vEA4eBUe0RgpuF4eGunGso9AaNGy3UdcgRH9zRKKFj3ouPGlyxTzYSAwSA
> SoqzlRCRP8m+m1HU6qu1/a9Not0jcbVTLt7xUGBzNZpYSV4E2o+iGF5KiIhGzRO+
> AFAvSK8WH0tQ28fbph3mlwvC0+3vlQe0efDPfcHP5AktF2qiR4j5nDyBAi9E+uNw
> XjJTn5vpbNK80o7De/r6
> =wefq
> -----END PGP SIGNATURE-----
> 
> --=_45557bc0a5e217b81ba14abed50af396--

I hope it's legible...

With kind regards

Torben Mohrfeldt


Am 03.06.2018 01:31, schrieb Jan Kowalsky:
> Hi Torben,
> 
> 
> Am 01.06.2018 um 11:47 schrieb T. Mohrfeldt (Liesegang GmbH):
>> Hello fellow Kolabusers,
>> 
>> I've recently installed the enigmail-plugin for roundcubemail and so 
>> far
>> it's working fine,
>> 
>> however as soon as I try to send a message signed and not encrypted 
>> with
>> PGP the signature is valid in my Sent-Folder but invalid at the
>> receiving Inbox. I am a little bit puzzled, can DKIM signing be the
>> problem? And if so how can I solve this (if it' solvable...). What 
>> else
>> could be tampering with my sent mail?
> 
> can you send the source of both emails?
> 
> Regards
> Jan
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