Thunderbird creates wrong digital S/MIME signature for emails with "Content-Transfer-Encoding: quoted-printable"
Thunderbird 102.5.0, 64 bit, on Win 10 Pro 22H2
I have multiple email accounts in my Thunderbird, and 2 of them have S/MIME certificates. The digital signing of emails by default is enabled in both accounts. The certificates are valid and not expired. Today I had sent a signed email (not encrypted) from one of these two accounts to the other one, and I noticed that the S/MIME icon in the received email has a red exclamation mark. When I click on it, the message box says "Digital Signature Is Not Valid". I did several tests and found, that this only happens when the email contains non-ASCII characters and the encoding changes from "Content-Transfer-Encoding: 7bit" to "Content-Transfer-Encoding: quoted-printable".
The easiest way to reproduce is: Send an digitally signed, but not encrypted email from an email account with S/MIME certificate to any other email account. The subject is empty, the email body contains only one single character: "ä". (German Umlaut, a with 2 dots above it). You may also use other characters like "ö, ü, ß, €".
The wrong signature in the received email is noticed not only by Thunderbird, but also by other email software (e.g. Android FairEmail), which means the failure happens during creation of the email in Thunderbird and it's not a decoding problem of Thunderbird.
I also managed somehow to send emails with text that contains these characters and has "Content-Transfer-Encoding: 8bit"; however, these emails are signed correctly.
Please tell me whether I should open a bug report in bugzilla.mozilla.org; I assume that Product="MailNews Core" and Comp="Security: S/MIME" would be the right parameters.
Here's the source of one of the faulty emails (subject="Test", body="ß"). Since the email contains only the public key, it should be no problem to reveal it.
From - Wed Nov 30 09:25:08 2022 X-Account-Key: account1 X-UIDL: 1N0WD8-1omBrr2Q20-00wR6n X-Mozilla-Status: 0001 X-Mozilla-Status2: 00000000 X-Mozilla-Keys: Return-Path: <tobias.knauss@web.de> Authentication-Results: web.de; dkim=pass header.i=@web.de Received: from mout.web.de ([212.227.17.11]) by mx-ha.web.de (mxweb102
[212.227.17.8]) with ESMTPS (Nemesis) id 1MOzOo-1pNSUp1yMW-00PPjD for <Tobias.Knauss@web.de>; Wed, 30 Nov 2022 09:25:07 +0100
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=s29768273; t=1669796707; bh=SDq5umjzV3wYXY36JV/aVkzI8u3Hf2Hec8CCGNwtB9w=; h=X-UI-Sender-Class:Date:To:From:Subject; b=FbQ67rifktxP9nM8sz3D36tt/ZsaY2Vi1OmdY9oOBI2WroXYPpeXudVNEhf84siT6 swNCVIXj9UKx/dqzVjOIycuyqJfOODWeLHtIQ1YnYcOAsQeb/0PzS0HH8cWn+ZQCF1 S7IzhcMGq1wI94c7x650tL6Rb046Ec5AH7DGpT11eAXluml5L0WrP06avgaZyfXfbt oY1Ysx01hJAxDtBRiozAO+oXl+olvn8q3PNucZ99C74qO/8diNyeuoNIDoVbcG1VmS AJ6vRcP9qOFcFxASQH9aEyBQFGTMHbkJfvmZ+/uSRX8c6g3c4SJKlj2GtFAVP7aD+W +8x+5P1HSy13A== X-UI-Sender-Class: 814a7b36-bfc1-4dae-8640-3722d8ec6cd6 Received: from [10.1.0.62] ([79.239.239.241]) by smtp.web.de (mrweb106
[213.165.67.124]) with ESMTPSA (Nemesis) id 1MqIB7-1odclE14Vf-00nFub for <Tobias.Knauss@web.de>; Wed, 30 Nov 2022 09:25:07 +0100
Message-ID: <36ee3171-8269-1aaa-b283-3a8e75490704@web.de> Date: Wed, 30 Nov 2022 09:25:06 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.5.0
To: =?UTF-8?Q?Tobias_Knau=c3=9f?= <Tobias.Knauss@web.de> From: =?UTF-8?Q?Tobias_Knau=c3=9f?= <tobias.knauss@web.de> Subject: Test Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms070608090501000005000908" X-Provags-ID: V03:K1:3fHBG1RsWkNgUbiHxoKZ6EIu4iy/Aw1ojrSACjcJnBJOa5AXJUg
ufKIPya1i38ZJxXpG4yL1RRB3aYOLCc/haGkmwXwwAfJi/t90zh7gS7kt0uxqTDhdcZX9Sf B6gtnEDF5AlIxJ9w6rKDIOEUgbtVfW8gbVKvDrTH9B6OnKZCSv4U2HZU3LBwQ7pFcdsNYO2 8Xh464uCkIGtE2ET05Jkw==
X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:hLucRX0RZTU=;sZIYbhwfM2hn0+2CD9AF2J9SpIE
pWzpiNVBxhx7gXZjri2ugc7bIYDghNpWUw/p7xFDt4YQJJrn61CargXPYOjJnqaOoRNMhkEWq W46jzFv73/zdWmBsVz87GwpYCbtn+78DJDBssCkugs5iHLCo6+jTVuwbbWRa9UBAVUE/w8kSi PHfC+cVCfoXTqMXdf+dTQQ9/LqGPjNVNvvkFmvguLkxdnkL9wwR55STWofI17SJ7upl8BxTEQ X0f8g0UEfUHhDRUvXH7wkYQoz69iDBGBoOdBGOKeWe7az4oaoidYAE14IOfpweNulI/G5ADA9 AWlaW4Y2WviPLfxuAW16slTnz78C/wqEnulSZ7s+Ax8qby9nOxFjRB4REIcG0/pwj6+2g/mmT sCeLfo3vLRaC2oHwb3J+r71u9hhE+pfYPEy9mvKRulgvT3OqKp+AwaZucgY+Nd4XKBUhRflbW ouR2hkE931lhuBJXZ37kGrDkVOauqF4fNmBzGXgFi9ey3t0/It6WxYy4ksjpA8ZttxeQJm46V YSfSVQ8OxzR4IRr4QNf2ULXGggGqR60twxG/yPMGYI7gSxLjw6txBbljMtPujqupMkyxqiu1o Ov1zGARzjbC0KW2ri7uNo77g1ALRtD+phWptfsxto7wfsj/lhDgpwX6GGxqcCgVMYCsPvg8Nw GNvs4UIkBBodlkb6iPP474ej7YK9oLDuU+u7U58iFk4nzvPHsB0ToTz0zOZR5qvuVWAEWyLl7 m/FHvGub1KFwz/FFOlt4ssJyqiC0Rnf3pPLBwMd1n2Iwce/lQ7rvAt0hZZwiC1AvzC51944CN v9cQYXZx5lsHZyOhR1NR7hK4Ajg0XV3/5iiarlwlgUu/PQHUZdVaBQXUb6b15DSYERbfUhrjM a1cL5ftj+Cb2lL3511iZhxBKiOGKcnYrnKd6z5+Wfg5hwq6cSoB6i3c+0Azo6m1zL4MCUrBpb ip5Coi3kkqNarUI5QsP32Ap75n4=
Envelope-To: <Tobias.Knauss@web.de> UI-InboundReport: unknown:5;M01:P0:nHmIiTtIVZM=;mWHVQETSzLIqUj2DPgkPLBuSL3cD
BRGKeiKHFmbqVqyLQ9J0WRFlpOFzSPHD8OM2wF0VjU1lQLH2nZLXU9Eh9nlUWbTDGmv2QbxIY cpdP4X5F/1igw7i6dmC4o+67pQiB3upr6LsBPfZdI4+lbbFQ5nkwHdZS+PiwOh02iMWTQ8UH1 hIPhQjpywrChmYhYU4FYQotP9FwwjQ3LCIQ8To/zH7FE2NocnEBDKMSpzCK6Rj4+pI7stPmUY xs8CdZOToTx0+DoNhPLC0AULjRw4wRpWC4B8bRvAhKWRwDbll96fujbhF+lujvjAuVz00BLnQ Xb707wsa5mQ0QWEo0ha07fX4AXXor8FB9yhZvN27I20/LGZxWwLcdbAk0j2uSo5xrFT4JJgfz 9JGrxn+22U2guf5+wwNY5OOTgOEa/KRP+sDFVXLqUsuwc1PKjE1iIM6BkIGVw7oew7nJDM4DT 8MirMLCpTgK+eOvRpKxxhQrH7BAZ5QsrkJWiCuPvoCVvNmbm6RyEOasc0aJpZxcUy8UzFLeBD TiSf2/QMzrJIVru8DwbZV0ctYUlleBxLwPTxTiqCPHp4UASkPnY9mP06IZGTJamUtT5dh0lhU jT1ujnQVh4PLgkJBZfyIiA8MY4v6j0xRdKs1mxvDkzDpYnRYee10miLI5cucMzJJj+PszrY7d K8DNvnjsC69uw3zN/A0bEUSh+7pwJrzLdVf4R0tX3np+0G4AP6OOeyqX4IMQXmJJYWcSYNSiY CSWxFzD5pjBzV9cWKiavXwD9bflGdoo57ZAciOAYtEKkqo4XKGODyh0A1tHDHO3hR8Nt7PBUR Poysqy+QToYR2fD/QTeIBmxaxkFJZDHjfOvKokDOzXdOyffc3uVrKtBDvMDEg3sjnpJY2jEdA 2aGSYHJQvDbAtzbMeY4n7xLQsetV9YEZj6yBbIC4yrgVwdN5Ocq3QAFJA4YmaUTh+VkdtyyF9 IFspahBSf96t2V4Rj3I/VCICGIBrtHt6cu/V0E3Drwn6sHJAgz1soR8Gh2Lnh9cu/ytxsNYZs H0EGTZZ/JPPa94cUJHgAQfp9lvpNsdAdhtjacOfRuliTXBVDaF88BnvHL8aNo20yGu2lz/2+F bJOAtPQo5heSddJ0snYfFohv0qyO9jAJ2obc3XaVwkbiuQIL5BQRbYLefJwgckGRfl6PmGgol NQbAAiaOOfVbU4lKQuHxebuaG7uE8LR9JEm4YpGowlhmvUdsad40SCMrn4dtMRjqw9wK9/pxX Un5tZsvX6BGHeXrjZI34YOo72fZwYItjeXO1niL5cJR1bhse0dMk+5X3KEe/pLdTXOR8gJu2t KgcUMkydnHzHpnhyM5XGjefQfjEue61HUEXjT1rXsbslyYmgK7NDvmUGbCU+0ETpMb2QX1pD1 8q6M9AzBvL1ba5O7a5lJt4jAhf8OEAL+A81LE/FAObBtK+M66K3B1a7hrs33bsxzcxdKfTclu x5NkVj81Q4z2UhATEF5Wt8+F4PQtOQbqM2eTCd4EfB4s/da716KxWB5TQxAu85zMC6brZkt9X Oeg6TEBJgO7G73bf+qAfL0iwNsiZD1MdsM3qbyu0BkWip7iCkgfFkVAM6wcaA/o49AF9bSQ+a VBc1doEuUQpUqmHIZkIpG8WfnN7NFA4T1MquB+3dT8gQ1qYnu+ZrACjF90VxiUH/vC2IRZrMg qpCgHR+Yz7RUSROsS7ot3GjPb/g1Pi+dxM0PRgHh7WdxgK+4k6OG2dwH8vFLQNWo+mLjBa9kW GT1zaUXENEWD/a6kXvEHx4evHB4h4JiesWTzUHkRMRMvckilx51rc7VF/8L93PViGKBqzGzBC pnLJ4UJWddjm2aM5JFjoSoo3MftYHTMfpPhEj+xfJWxF4L8evrcksWOuwkMIpWxpbvWMtaDLB P9jvSYGVjGsk+S1ftF8wAMTlJ3hLZ8evNJs4bHCcB1p8O0u92cfLEG3D0eC0C07i/aCEqX4N0 xKnN7moeGSb4/UQS41ztytYhJBBqEmPzU/zu0umVRMK/fOyo8yeAzpqt1h52+Kc1+qUnXjK4z MR2xBn3sR1IeebZ9UYenYF0krBE/tY9eNq2Rab6gBS+EkTxkSDimwSuTr+3pjDgQ9R9ond9d2 DUkED661PyAneECQ+hBd5Df/rqW0y516d1dAWSoCyW3CIBI2ethBPRkgtDw8TGo9jC09KsRHg atIjiUvnsjxCLuWi7eX2Wcuvdo9hi0EzZsDcIIPPpOC5KHupKsDhYsCk+mmMW82A2qFzE1NSi C0g9dQwf25LmNm7hyVMG4q1Nm0wkkglHrM7OFECKoVsphgwKxjTQ3ulvaxa9SUAKV2ZUzfxud ldQ3quYyVQndRtn6vq3g9tf8goitno6rJuGDHehKgdwDCSxcYa9G19a8PWaXykpc7WrWWcr2L e+BThlqTCgbp1prPdznRlxcLmusglzFv3j+gbwMogH2FLNBBAwfilIHDLpw628abIRMPsPBvD hdaxORL6sJz2YBuYJhBKOkuye+6CP/ZRybXRfBZvqPMKOZjM38peYQ79fkW/cdDbUUthc0YUZ 5nPCXapN6JVA3s4Qb+LExcth6IcfW+vKvSAWka4+DyOZ5FkHM/WS9vNaSnRvQn3ckMeTnl+Rl 3mmQT1jCwnw5COJr0F2yM0cwlSyj9c6CitC6IQYLsFLGJtXI8OEdo5U1qYYs9G1c015M26AQP Otil0mkEgm9LzFtzwjteXAADpwb8xInCZ/G5vYmRGy6ukPqVKw2Ei2RcaEHQZlwjsRKrDtYSw U5TjpYh6aXU3Acz/TfPwQaA4IfqO90oQI61ORm+kfU4ICC3IEHL24YF3Rdhs2nsqZpBjpTTtw 6+KvK3moNgqV207X+d76mSxXMymUbl0Jb3d4/8OHMehsL8GMIxFe+3rku1aJkNJquwCGTYj58 nm182X8/kICL8LgLxX9QE9XzRiJ44juk2n4TpAzSckgT5rI7QD5vhCdhTuwhEvoc3ptmX8wYE EdcQNjedSfLdi8p90nyEFzUii4bj0Mfl4Rd+pnRz2SajC6xLR3cf0/df/SRiyUsj1+KQk1apF N+Ef5JefBOepbv6q27uXStsbca94MB1ZzAVyCb17UA8+rBvFowrY/IBRH4QBsf+3vKUrUlZHA QJAL4xv3eGoz/l6MPxrDe6RA5GKDR1ikp2M2oX5LFLWlBoEkYzE+RqE7oqYa6Pf/3QX9l74/l Fztuu5EahcuRLeVHW90dreEgTmljwdAfgBWrs/+F9n/OErTN1dLOHqaozB43LuK43YhAJ7tU3 k6iGT/VwPU3ifL+tTt1woW0Evt+jNoiP4bG8Vqqg1P9AP01GO8nbwZNDooADxL6/TtEtjgaE9 yWDlPCwymr2XUQdyiMIoiLji4dMjJ+QKybGLTBB0pHEv6qMiAniCA8UyGefnvQ35oy5ISe06q G7mX8qX1KpBGervneg88z4PZl3xb/a6yeBIHZWFqUu8PHpAAdyEVk0ibV7YKgM6w1ExyNjFmm TxRWArHYFISZjeZI06gANp5xfOfl0aAqaIlYFpB+Eww/eirupJe0n4lY4a9PdBlDkg6T2dsfJ 9tyHeevkDDj3y8nG5TVAsXpoYMibjgVYd+C1Rhg3SSztlOUZTwuzLxyDRmDEvpq9AS9Rfy93O H+2JKiN2YyM9wCmbNHn8yl4X4cDPjmlBiLUhkHVvFJ2Cir2rr0J9p2iKuB4VY886vXDsUl3oL HC8BSy6X93Ai8tzZEZ7Fp21MRigbw28kpQuUFMk7MoR1L1Xff5TCVH1oopQhzmRm3HvhHgzP7 ubI7h4bl3LGwMyaOKlRNRbZtIKMG0TybX5tiZOQ+jeTCprBsp+kyoj/MFU8SzSEiHhrTf1jrl ZuElYV24iaRiyqSLIB3QIxrIxQFvpUcWuMBFpesCCcUec/sKzrl08DAXP9lLHamKVPiCC/hKI hUyWdrjzqlG0WVR8kGp+aKgV6tQW4ca1lOB7VhRZkhXPrLo+1UUPyz0t6Y7nojs2aM2qiBHWF L56hLd9TqZLcFgFLvQV8Vvl6/KzBDf7n9XmMqU/FeecS23I2nDITwuZIVeGK5TqUhaDOtxYlG Cy5CH8tjSfCKdOBNQ+IxZ5JAVXJYucmj+8C4vtGZFL/R5TWkG5B0OObg4wGEln3Tg8hCMyjGZ R64lQYX6Y0LKIguDqZWm5xTXnHSqMIBHn4SJHYkKZyZqKF/CGsxOSmrid8fvUxfUV1gjSrkYZ MoEgnMwL0ax5egBqUBEb+FcCwV4xRmVRaxGIz9WoWsVk1H7GZbj4P8KtdnP+5QvJas61B9Non sR+Am056GGgASvW9BsaO5ski4ryVdvd47xKsbEDzFI9Y6OYi/ZazBqDsqeBt/dGRUtPGraaD0 nxReyz1wzsCIS5QTQPLe+3m/5Xd6/wtvisqhreaJXvgF2/XldjisctBrhPQdjX5kwQKLQRDlN F6i1odYnS+3MfDkxABF6ItMLvxpEtWLjiWEZNlVODdwL1J3Ht4HO6pJ+KY89nVrlq1rkNaE6Y UWbNDQwPdcRfraT35FhiIRr0IM6z9aVnQOfOABH4EUvL+RUaWSTj5adWqnYOjPfFVLacM8B8q pGPndKnKsIvLsQenhiTUM7RIuyMi1+2DV5yFt+XJPJ2iyS7rh91arbBPGSB/1Gpu2Mq0XkLvE z23kFI0sYmyQdQS0Gy6fQNdbtEsfyJJFwuzwkdEOWwftzBN39H7v20thsT6DUc5PwJG5sY8FG Tx/efsDYrIBhfIproglTs5yXr9spH4IIgFAvV+rBVpe11sfS1qJQ542oR62urStwQfiGDUR5o rpXuAHrh8TpDIOPw1nqdhjOYkaFzQFeklWyFdhRuVUgFblIIXaIPOU7fwsT+tWRZGrHGbFsQg pWBE+zcGwvBLQt+itfKvf3Rc09NLSRa5AuLzbWvXTcBBsyEbMgxK31SF2P3ynHf0V5VnYbG6n
X-AVK-Virus-Check: AVA 25.34594;8A26DEF X-AVK-Spam-Check: 1;str=0001.0A782F29.63871365.0027,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0;F1206
This is a cryptographically signed message in MIME format.
ms070608090501000005000908
Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable
=C3=9F
ms070608090501000005000908
Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature
MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC Cc4wggSRMIIDeaADAgECAggMZZcQXrVrtjANBgkqhkiG9w0BAQsFADBmMQswCQYDVQQGEwJE RTEzMDEGA1UECgwqREdOIERldXRzY2hlcyBHZXN1bmRoZWl0c25ldHogU2VydmljZSBHbWJI MSIwIAYDVQQDDBlkZ25zZXJ2aWNlIENBIDIgVHlwZSBFOlBOMB4XDTIyMTEyNjA2NTIxNVoX DTIzMTEyNjA2NTIxNVowbTELMAkGA1UEBhMCREUxITAfBgNVBAUTGDQwMDAwMDAwNjM4MWI5 ZmQzM2QxNmI0NDEWMBQGA1UEAwwNVG9iaWFzIEtuYXXDnzEjMCEGCSqGSIb3DQEJARYUdG9i aWFzLmtuYXVzc0B3ZWIuZGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCcTBF0 FK5Ix82i99+vpVAqiid2r21DQJZd/J4ondRO3T6qU2sZKZxuuAzyfbhie7z8iA/XDHdtPbhD FU9R1D8wb7cGqDoWkZILhaCNXZt83I8bUkp+cmJLxDXuQJrPtzyUOStowdgR6UJgrHmppxFf dLZW/GWB1NCIBKVzuTJOvj69t+o6W+e3yIScr7FmPK8Aa5dY9Vm9Ny9opqYTNecTK8IYWmLg Zc+SpODEOtUg+WSsCJtjMZxFPAjWPUAik1IOxb+8iMQc5iRo/Yn/74wK96qV5V+QVVgoCZWP /dAi1dDZBlf2NQPT5uEqvBofBwyajEIWC9PzayyFQfUpDTKlAgMBAAGjggE6MIIBNjAdBgNV HQ4EFgQUQs8p2WibOEwH4u0m+PJWtCNcQWEwDAYDVR0TAQH/BAIwADAfBgNVHSMEGDAWgBTp xpPR1Q8GZHLqapY+uhDyVFSyeTBWBgNVHSAETzBNMEsGDCsGAQQB+ysCAQMCCDA7MDkGCCsG AQUFBwIBFi1odHRwOi8vc2VjNS5kZ25zZXJ2aWNlLmRlL3BvbGljaWVzL2luZGV4Lmh0bWww PgYDVR0fBDcwNTAzoDGgL4YtaHR0cDovL3NlYzUuZGduc2VydmljZS5kZS9jcmwvY3JsMi10 eXBlLWUuY3JsMA4GA1UdDwEB/wQEAwIEsDAdBgNVHSUEFjAUBggrBgEFBQcDAgYIKwYBBQUH AwQwHwYDVR0RBBgwFoEUdG9iaWFzLmtuYXVzc0B3ZWIuZGUwDQYJKoZIhvcNAQELBQADggEB ANjBC2zUYFeXL0jANscoz5MWWA8PMjYMefyJ+rawNy0stGP5k4/RIMY+AM7yOrF33TSieUPj omwTEeUutizht8vOZllqA15nCNGVnTvfWFq9n5VADwWvg58FCzx93+aWdLxMwwQS1hAdt3y6 XRdPjKHcgrdBh14oYmP16gQD5+2XMPtJwqQ2vnA6OJRUN8hXwjOHEG0qOt0c38jZ9YDMm5vJ BjpGhcmaYrahl6yGUXtf55PgNYjTiW3cxDg07DjLx0MwH/tJBsodpMoblFznco/tGgjPddtM JOkvcgdLDX7EoDWTHVDF8vQlNt6Xzs60UjfwiH9U8BI4FjZUriJ/8XkwggU1MIIEHaADAgEC AghVHErXZq0l9jANBgkqhkiG9w0BAQsFADBhMQswCQYDVQQGEwJERTEzMDEGA1UECgwqREdO IERldXRzY2hlcyBHZXN1bmRoZWl0c25ldHogU2VydmljZSBHbWJIMR0wGwYDVQQDDBRkZ25z ZXJ2aWNlIFJvb3QgNzpQTjAeFw0xNjEwMjYwOTIyNDFaFw0yNDEwMjYwOTIyNDFaMGYxCzAJ BgNVBAYTAkRFMTMwMQYDVQQKDCpER04gRGV1dHNjaGVzIEdlc3VuZGhlaXRzbmV0eiBTZXJ2 aWNlIEdtYkgxIjAgBgNVBAMMGWRnbnNlcnZpY2UgQ0EgMiBUeXBlIEU6UE4wggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDcpfKUP3THo0fSl2bOa6PNbRcDYZaE4ZV3vLGre/U4 45OsRahORPeP/9L4nycTK6fUawpDTqOaDxtXYxjoJNC9LnKRxVB/UkBf0h25vN0L1iV4KhCa Y8TimV0z2yUSlb2NuZ4gdBU69qJkasqYj+AP8OcQOo0idj9Nr1eloHD32i0JDPkhBj8Vf6c6 b7mNyn8yfZYvZlzzV2iQ/cvo6iFLx2wgG7mCkOZ8BAHGDFw6T0UIA0Bk60YhRMRxI7GXjMxB QA2Y/XXoP4dvQDDtMNmK0r5DUXof87w2brXctuQ2b4xNwFIErVoAQu8ftnXTm9iOtaOsWyLM ZX6v5szaQBqBAgMBAAGjggHqMIIB5jASBgNVHRMBAf8ECDAGAQH/AgEAMB8GA1UdIwQYMBaA FAEMFht0ctM8FO4md7dJFFPY+4sbMFsGCCsGAQUFBwEBBE8wTTBLBggrBgEFBQcwAYY/aHR0 cDovL3JvY3NwLWRnbi5kZ25zZXJ2aWNlLmRlOjgwODAvZWpiY2EvcHVibGljd2ViL3N0YXR1 cy9vY3NwMGoGA1UdIARjMGEwXwYMKwYBBAH7KwIBBAIBME8wTQYIKwYBBQUHAgEWQWh0dHA6 Ly93d3cuZGduc2VydmljZS5kZS90cnVzdGNlbnRlci9wdWJsaWMvZGduc2VydmljZS9pbmRl eC5odG1sMIGZBgNVHR8EgZEwgY4wgYuggYiggYWGgYJsZGFwOi8vbGRhcC5kZ25zZXJ2aWNl LmRlOjM4OS9DTj1DUkwtMSxPPURHTiUyMFNlcnZpY2UlMjBHbWJILEM9REU/Y2VydGlmaWNh dGVSZXZvY2F0aW9uTGlzdD9iYXNlP29iamVjdENsYXNzPWNSTERpc3RyaWJ1dGlvblBvaW50 MB0GA1UdDgQWBBTpxpPR1Q8GZHLqapY+uhDyVFSyeTAOBgNVHQ8BAf8EBAMCAQYwGwYJKwYB BAHAbQMFBA4wDAYKKwYBBAHAbQMFATANBgkqhkiG9w0BAQsFAAOCAQEAq7w5+kXJ+/xTat0j iTX4GDX5HUeQohqAuLGfotHcqQqqjF8G6UUI0q4i0tnhHtldhZrNBOErgThGsToNZ1Y2Gn0F RrcrUU9LnhSMwd1XJ0Je6ERSdEh4vXf8YxJQGZJPCPJcrblhue0mmwO9nbhKewGglht5VWSH TS8vq5Da3zbxFG6lIdE62V4KqcMAiyY2BfL8guCPscTWl5txJrjb4ENo9nRqdzsXNEG3yyzg myv6znQ4pGgTe5E6qXx5bO6XCDoUK4Kz1S82PzR6hvcxKZo7kKK2ut2B3buwU8xqfw73EMH8 imv4LW/Sx59wKElKjijjHdNrFG/wMRobDYzMyTGCA4IwggN+AgEBMHIwZjELMAkGA1UEBhMC REUxMzAxBgNVBAoMKkRHTiBEZXV0c2NoZXMgR2VzdW5kaGVpdHNuZXR6IFNlcnZpY2UgR21i SDEiMCAGA1UEAwwZZGduc2VydmljZSBDQSAyIFR5cGUgRTpQTgIIDGWXEF61a7YwDQYJYIZI AWUDBAIBBQCgggHhMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8X DTIyMTEzMDA4MjUwNlowLwYJKoZIhvcNAQkEMSIEICgGm+Wz5+ZWWam3+mkac/NfEzOltA/l 0YgC09VvFimjMGwGCSqGSIb3DQEJDzFfMF0wCwYJYIZIAWUDBAEqMAsGCWCGSAFlAwQBAjAK BggqhkiG9w0DBzAOBggqhkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAwBwYFKw4DAgcwDQYI KoZIhvcNAwICASgwgYEGCSsGAQQBgjcQBDF0MHIwZjELMAkGA1UEBhMCREUxMzAxBgNVBAoM KkRHTiBEZXV0c2NoZXMgR2VzdW5kaGVpdHNuZXR6IFNlcnZpY2UgR21iSDEiMCAGA1UEAwwZ ZGduc2VydmljZSBDQSAyIFR5cGUgRTpQTgIIDGWXEF61a7YwgYMGCyqGSIb3DQEJEAILMXSg cjBmMQswCQYDVQQGEwJERTEzMDEGA1UECgwqREdOIERldXRzY2hlcyBHZXN1bmRoZWl0c25l dHogU2VydmljZSBHbWJIMSIwIAYDVQQDDBlkZ25zZXJ2aWNlIENBIDIgVHlwZSBFOlBOAggM ZZcQXrVrtjANBgkqhkiG9w0BAQEFAASCAQAnGAhElnovaOUYDfGXTsTDzoyx6e8JxsZJvyqk ESEhnlKqyOGcb4w5T5xVu19F48MVzA+1mr88EaCFsl3ijj7Uq0SSS7coK2EQ8kd2krzpJjdg WvVQKwXSXu+g2cAEhKfCJhxvJikw/XYym0SrzC2NbqZc4DffTfNIFN54dataOGgBQCQwHk1l 97Ayef1H18PHD4Vb6Fi1v24Y3/rk2t/NYIj57Muu0xVpipKSMPx+idf7CrzZMORZN2ojdIqh DhoGEJhGcwULglgwDNmJgB32v3cVXxJrvdVc09otuUvx76koBU+zC7ZOJ0oO96atephgCN5g m9bAe5z/KgS+lytGAAAAAAAA
ms070608090501000005000908--
All Replies (1)
I just checked the sent emails in the "Sent" folder. These emails are fine, and their encoding is "Content-Transfer-Encoding: 8bit". Why is the encoding different from the received email? What goes wrong here?
Here's the source of one of the outgoing emails (should be the one that belongs to the received one above):
From - Wed, 30 Nov 2022 08:31:39 GMT X-Mozilla-Status: 0001 X-Mozilla-Status2: 00800000 Message-ID: <16bc6395-5bf8-04d5-db8a-6e0053055f14@web.de> Date: Wed, 30 Nov 2022 09:31:38 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
Thunderbird/102.5.0
To: =?UTF-8?Q?Tobias_Knau=c3=9f?= <Tobias.Knauss@web.de> From: =?UTF-8?Q?Tobias_Knau=c3=9f?= <tobias.knauss@web.de> Subject: Test Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms060506050804060200010808"
This is a cryptographically signed message in MIME format.
ms060506050804060200010808
Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit
ß
ms060506050804060200010808
Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature
MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC Cc4wggSRMIIDeaADAgECAggMZZcQXrVrtjANBgkqhkiG9w0BAQsFADBmMQswCQYDVQQGEwJE RTEzMDEGA1UECgwqREdOIERldXRzY2hlcyBHZXN1bmRoZWl0c25ldHogU2VydmljZSBHbWJI MSIwIAYDVQQDDBlkZ25zZXJ2aWNlIENBIDIgVHlwZSBFOlBOMB4XDTIyMTEyNjA2NTIxNVoX DTIzMTEyNjA2NTIxNVowbTELMAkGA1UEBhMCREUxITAfBgNVBAUTGDQwMDAwMDAwNjM4MWI5 ZmQzM2QxNmI0NDEWMBQGA1UEAwwNVG9iaWFzIEtuYXXDnzEjMCEGCSqGSIb3DQEJARYUdG9i aWFzLmtuYXVzc0B3ZWIuZGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCcTBF0 FK5Ix82i99+vpVAqiid2r21DQJZd/J4ondRO3T6qU2sZKZxuuAzyfbhie7z8iA/XDHdtPbhD FU9R1D8wb7cGqDoWkZILhaCNXZt83I8bUkp+cmJLxDXuQJrPtzyUOStowdgR6UJgrHmppxFf dLZW/GWB1NCIBKVzuTJOvj69t+o6W+e3yIScr7FmPK8Aa5dY9Vm9Ny9opqYTNecTK8IYWmLg Zc+SpODEOtUg+WSsCJtjMZxFPAjWPUAik1IOxb+8iMQc5iRo/Yn/74wK96qV5V+QVVgoCZWP /dAi1dDZBlf2NQPT5uEqvBofBwyajEIWC9PzayyFQfUpDTKlAgMBAAGjggE6MIIBNjAdBgNV HQ4EFgQUQs8p2WibOEwH4u0m+PJWtCNcQWEwDAYDVR0TAQH/BAIwADAfBgNVHSMEGDAWgBTp xpPR1Q8GZHLqapY+uhDyVFSyeTBWBgNVHSAETzBNMEsGDCsGAQQB+ysCAQMCCDA7MDkGCCsG AQUFBwIBFi1odHRwOi8vc2VjNS5kZ25zZXJ2aWNlLmRlL3BvbGljaWVzL2luZGV4Lmh0bWww PgYDVR0fBDcwNTAzoDGgL4YtaHR0cDovL3NlYzUuZGduc2VydmljZS5kZS9jcmwvY3JsMi10 eXBlLWUuY3JsMA4GA1UdDwEB/wQEAwIEsDAdBgNVHSUEFjAUBggrBgEFBQcDAgYIKwYBBQUH AwQwHwYDVR0RBBgwFoEUdG9iaWFzLmtuYXVzc0B3ZWIuZGUwDQYJKoZIhvcNAQELBQADggEB ANjBC2zUYFeXL0jANscoz5MWWA8PMjYMefyJ+rawNy0stGP5k4/RIMY+AM7yOrF33TSieUPj omwTEeUutizht8vOZllqA15nCNGVnTvfWFq9n5VADwWvg58FCzx93+aWdLxMwwQS1hAdt3y6 XRdPjKHcgrdBh14oYmP16gQD5+2XMPtJwqQ2vnA6OJRUN8hXwjOHEG0qOt0c38jZ9YDMm5vJ BjpGhcmaYrahl6yGUXtf55PgNYjTiW3cxDg07DjLx0MwH/tJBsodpMoblFznco/tGgjPddtM JOkvcgdLDX7EoDWTHVDF8vQlNt6Xzs60UjfwiH9U8BI4FjZUriJ/8XkwggU1MIIEHaADAgEC AghVHErXZq0l9jANBgkqhkiG9w0BAQsFADBhMQswCQYDVQQGEwJERTEzMDEGA1UECgwqREdO IERldXRzY2hlcyBHZXN1bmRoZWl0c25ldHogU2VydmljZSBHbWJIMR0wGwYDVQQDDBRkZ25z ZXJ2aWNlIFJvb3QgNzpQTjAeFw0xNjEwMjYwOTIyNDFaFw0yNDEwMjYwOTIyNDFaMGYxCzAJ BgNVBAYTAkRFMTMwMQYDVQQKDCpER04gRGV1dHNjaGVzIEdlc3VuZGhlaXRzbmV0eiBTZXJ2 aWNlIEdtYkgxIjAgBgNVBAMMGWRnbnNlcnZpY2UgQ0EgMiBUeXBlIEU6UE4wggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDcpfKUP3THo0fSl2bOa6PNbRcDYZaE4ZV3vLGre/U4 45OsRahORPeP/9L4nycTK6fUawpDTqOaDxtXYxjoJNC9LnKRxVB/UkBf0h25vN0L1iV4KhCa Y8TimV0z2yUSlb2NuZ4gdBU69qJkasqYj+AP8OcQOo0idj9Nr1eloHD32i0JDPkhBj8Vf6c6 b7mNyn8yfZYvZlzzV2iQ/cvo6iFLx2wgG7mCkOZ8BAHGDFw6T0UIA0Bk60YhRMRxI7GXjMxB QA2Y/XXoP4dvQDDtMNmK0r5DUXof87w2brXctuQ2b4xNwFIErVoAQu8ftnXTm9iOtaOsWyLM ZX6v5szaQBqBAgMBAAGjggHqMIIB5jASBgNVHRMBAf8ECDAGAQH/AgEAMB8GA1UdIwQYMBaA FAEMFht0ctM8FO4md7dJFFPY+4sbMFsGCCsGAQUFBwEBBE8wTTBLBggrBgEFBQcwAYY/aHR0 cDovL3JvY3NwLWRnbi5kZ25zZXJ2aWNlLmRlOjgwODAvZWpiY2EvcHVibGljd2ViL3N0YXR1 cy9vY3NwMGoGA1UdIARjMGEwXwYMKwYBBAH7KwIBBAIBME8wTQYIKwYBBQUHAgEWQWh0dHA6 Ly93d3cuZGduc2VydmljZS5kZS90cnVzdGNlbnRlci9wdWJsaWMvZGduc2VydmljZS9pbmRl eC5odG1sMIGZBgNVHR8EgZEwgY4wgYuggYiggYWGgYJsZGFwOi8vbGRhcC5kZ25zZXJ2aWNl LmRlOjM4OS9DTj1DUkwtMSxPPURHTiUyMFNlcnZpY2UlMjBHbWJILEM9REU/Y2VydGlmaWNh dGVSZXZvY2F0aW9uTGlzdD9iYXNlP29iamVjdENsYXNzPWNSTERpc3RyaWJ1dGlvblBvaW50 MB0GA1UdDgQWBBTpxpPR1Q8GZHLqapY+uhDyVFSyeTAOBgNVHQ8BAf8EBAMCAQYwGwYJKwYB BAHAbQMFBA4wDAYKKwYBBAHAbQMFATANBgkqhkiG9w0BAQsFAAOCAQEAq7w5+kXJ+/xTat0j iTX4GDX5HUeQohqAuLGfotHcqQqqjF8G6UUI0q4i0tnhHtldhZrNBOErgThGsToNZ1Y2Gn0F RrcrUU9LnhSMwd1XJ0Je6ERSdEh4vXf8YxJQGZJPCPJcrblhue0mmwO9nbhKewGglht5VWSH TS8vq5Da3zbxFG6lIdE62V4KqcMAiyY2BfL8guCPscTWl5txJrjb4ENo9nRqdzsXNEG3yyzg myv6znQ4pGgTe5E6qXx5bO6XCDoUK4Kz1S82PzR6hvcxKZo7kKK2ut2B3buwU8xqfw73EMH8 imv4LW/Sx59wKElKjijjHdNrFG/wMRobDYzMyTGCA4IwggN+AgEBMHIwZjELMAkGA1UEBhMC REUxMzAxBgNVBAoMKkRHTiBEZXV0c2NoZXMgR2VzdW5kaGVpdHNuZXR6IFNlcnZpY2UgR21i SDEiMCAGA1UEAwwZZGduc2VydmljZSBDQSAyIFR5cGUgRTpQTgIIDGWXEF61a7YwDQYJYIZI AWUDBAIBBQCgggHhMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8X DTIyMTEzMDA4MzEzOVowLwYJKoZIhvcNAQkEMSIEICgGm+Wz5+ZWWam3+mkac/NfEzOltA/l 0YgC09VvFimjMGwGCSqGSIb3DQEJDzFfMF0wCwYJYIZIAWUDBAEqMAsGCWCGSAFlAwQBAjAK BggqhkiG9w0DBzAOBggqhkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAwBwYFKw4DAgcwDQYI KoZIhvcNAwICASgwgYEGCSsGAQQBgjcQBDF0MHIwZjELMAkGA1UEBhMCREUxMzAxBgNVBAoM KkRHTiBEZXV0c2NoZXMgR2VzdW5kaGVpdHNuZXR6IFNlcnZpY2UgR21iSDEiMCAGA1UEAwwZ ZGduc2VydmljZSBDQSAyIFR5cGUgRTpQTgIIDGWXEF61a7YwgYMGCyqGSIb3DQEJEAILMXSg cjBmMQswCQYDVQQGEwJERTEzMDEGA1UECgwqREdOIERldXRzY2hlcyBHZXN1bmRoZWl0c25l dHogU2VydmljZSBHbWJIMSIwIAYDVQQDDBlkZ25zZXJ2aWNlIENBIDIgVHlwZSBFOlBOAggM ZZcQXrVrtjANBgkqhkiG9w0BAQEFAASCAQBeBog7slxPKjb/kLm5KummoEyW6Dntje0p4IyK pmfl8745jjgI/v0ubp6+Hq7rea7y5ub1lsaPN5OVeGqmYZsSeFqQ3KCzDlFji44MGKl9WrBp sKykfcDqTdjfbWS/mBso/bRMC0KodjPzpFBzJi4N2NIbwJoKE1BEgZRxwUfbRI/Ek90M/NkD MIMa3I9sxRNqyJFWiknhC7Ho+2P9LeVyJhKPsLp0yW/Jdfh8sPR4TaCW8yu4YZNXsrA16Vz5 miQ4hBoWDUB2iDpHG//AxRYT2jN6Mqyqdr1e/lYhGrQkjuLUPQBnPiCoa4pa7h+B7+MUFPfQ GqAnOnkM5v698ZLJAAAAAAAA
ms060506050804060200010808--