Khramtsov.ilya@gmail.com without links

Hello, when I try to send a letter to gmail, all letters come without pictures and links.

Tried other mail.ru mail servers, Yandex they all display correctly.

Gmail

Summary
Delivered-To: khramtsov.ilya@gmail.com
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ARC-Authentication-Results: i=1; mx.google.com;
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Return-Path: <bot@umschool.net>
Received: from mx11.smtp.send-box.ru (mx11.smtp.send-box.ru. [91.239.43.111])
        by mx.google.com with UTF8SMTPS id 66-20020a1c1945000000b003a18e7a5b1esi9025835wmz.86.2022.07.25.03.42.56
        for <khramtsov.ilya@gmail.com>
        (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128);
        Mon, 25 Jul 2022 03:42:57 -0700 (PDT)
Received-SPF: softfail (google.com: domain of transitioning bot@umschool.net does not designate 91.239.43.111 as permitted sender) client-ip=91.239.43.111;
Authentication-Results: mx.google.com;
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MIME-Version: 1.0
Auto-Submitted: auto-generated
Date: Mon, 25 Jul 2022 10:42:56 +0000
Precedence: bulk
Reply-To: "Уведомления Mattermost Umschool" <bot@umschool.net>
From: "Уведомления Mattermost Umschool" <bot@umschool.net>
Subject: [Mattermost Umschool] Илья Храмцов invited you to join Umschool Team
Content-Transfer-Encoding: 8bit
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Received: from username [84.201.153.165] (Authenticated sender: bot@umschool.net) by smtp.send-box.ru (Exim); Mon,25 Jul 2022 10:07:56
To: khramtsov.ilya@gmail.com
Errors-To: postmaster@smtp.send-box.ru
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Feedback-ID: 2000023206:smtp:MR
List-Unsubscribe: <mailto:unsubscribe_e918abe1e0f954ff86f224c86ac202b7@smtp.send-box.ru>, <http://s2000023206.unsubscribe.smtp.send-box.ru/e918abe1e0f954ff86f224c86ac202b7>
Message-Id: <rfkofk-15abtf-iz@smtp.send-box.ru>
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  h=subject : from : to : message-id : cc;
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Reminder: =D0=98=D0=BB=D1=8C=D1=8F =D0=A5=D1=80=D0=B0=D0=BC=D1=86=D0=BE=D0=
=B2 invited you to join the Umschool team.
Start collaborating with your team on Mattermost

Join now ( https://mattermost.umschool.net/signup_user_complete/?d=3D%7B%22=
display_name%22%3A%22Umschool%22%2C%22email%22%3A%22khramtsov.ilya%40gmail.=
com%22%2C%22name%22%3A%22umschool%22%2C%22reminder_interval%22%3A%2248%22%7=
D&t=3D7bqkknkqzdp4kzhmbtfmain8sz8srbrt6bs7xqc1e6dpjmqkqxu7nqzdef8peyzp )

What is Mattermost?
Mattermost is a flexible, open source messaging platform that enables secur=
e team collaboration.
Learn more ( mattermost.com )

=C2=A9 2022 Mattermost, Inc. 530 Lytton Avenue, Second floor, Palo Alto, CA=
, 94301
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t-size:13px;" width"132">
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                       =20
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             =20
              <div style"margin:0px auto;max-width:552px;">
                <table align"center" border"0" cellpadding"0" cellspacing"0=
" role"presentation" style"width:100%;">
                  <tbody>
                    <tr>
                      <td style"direction:ltr;font-size:0px;padding:0px 24p=
x 40px 24px;text-align:center;">
                       =20
                        <div class"mj-column-per-100 mj-outlook-group-fix" =
style"font-size:0px;text-align:left;direction:ltr;display:inline-block;vert=
ical-align:top;width:100%;">
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le"presentation" style"vertical-align:top;" width"100%">
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                                <td align"center" class"title" style"font-s=
ize:0px;padding:0px;word-break:break-word;">
                                  <div style"text-align: center; font-weigh=
t: 600; font-size: 28px; line-height: 36px; letter-spacing: -0.01em; color:=
 #3F4350; font-family: Open Sans, sans-serif;">Reminder: =D0=98=D0=BB=D1=8C=
=D1=8F =D0=A5=D1=80=D0=B0=D0=BC=D1=86=D0=BE=D0=B2 invited you to join the U=
mschool team.</div>
                                </td>
                              </tr>
                              <tr>
                                <td align"center" class"subTitle" style"fon=
t-size:0px;padding:16px 24px 16px 24px;word-break:break-word;">
                                  <div style"font-family: Open Sans, sans-s=
erif; text-align: center; font-size: 16px; line-height: 24px; color: rgba(6=
3, 67, 80, 0.64);">Start collaborating with your team on Mattermost</div>
                                </td>
                              </tr>
                              <tr>
                                <td align"center" vertical-align"middle" cl=
ass"button" style"font-size:0px;padding:0px;word-break:break-word;">
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ng"0" role"presentation" style"border-collapse:separate;line-height:100%;">
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                                        <a href"http://s2000023206.go.smtp.=
send-box.ru/stat/e918abe1e0f954ff86f224c86ac202b7/proc/aHR0cHM6Ly9tYXR0ZXJt=
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0; text-transform: none; mso-padding-alt: 0px; border-radius: 4px; text-dec=
oration: none; background-color: #1C58D9; font-weight: 600; font-size: 16px=
; line-height: 18px; color: #FFFFFF; padding: 15px 24px;" target"_blank">
                                          Join now
                                        </a>
                                      </td>
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                            </tbody>
                          </table>
                        </div>
                       =20
                      </td>
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             =20
             =20
               =20
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"0" role"presentation" style"width:100%;">
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                      <tr>
                        <td style"direction:ltr;font-size:0px;padding:0px 0=
px 40px 0px;text-align:center;">
                         =20
                          <div class"mj-column-per-100 mj-outlook-group-fix=
" style"font-size:0px;text-align:left;direction:ltr;display:inline-block;ve=
rtical-align:top;width:100%;">
                            <table border"0" cellpadding"0" cellspacing"0" =
role"presentation" style"vertical-align:top;" width"100%">
                              <tbody>
                                <tr>
                                  <td align"center" style"font-size:0px;pad=
ding:0px;word-break:break-word;">
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cing"0" role"presentation" style"border-collapse:collapse;border-spacing:0p=
x;">
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Hi @nuBacuk and welcome to the Mattermost forums!

Please let me know what mattermost version you are using so I can try to reproduce that on my end.

@agriesser mattermost/mattermost-team-edition:7.1.2 for docker

Hi again,

sorry for the long turnaround, I didn’t get to trying that out earlier.
I did install a 7.1.2 teams edition, set up mailing and invited my gmail account, this is what the invite mail looked like on gmail:

And this is the mail I got when trying to reset my password:

Do you maybe have an adblocker or something like this active on your system? Can you reproduce this problem with a different browser or a different gmail account?

1 Like

Many clients in our gmail organization have this problem, I’m talking to a company that provides mailing services and they suggested changing the Content-Transfer-Encoding:
from quoted-printable to base64, is there such a possibility in mattermost?

Not sure if this will really help - maybe your gmail organization has special settings configured which cause these problems; Do you have a gmail account outside your organization, a private one, f.ex.? If so, would it be possible to either forward one of the mails there (but they might already be broken at this point) or get mattermost to directly send an e-mail to a gmail address outside your organization? maybe some spam filters or other milters are causing this behaviour.

I’m not aware of changing the headers directly in Mattermost, there’s not really a configuration option to do so and the mail handling is done by Go libraries which probably cannot be influenced in that way, but if you managed to get a working mail in source, you can always resend that from your client or any server after making modifications to see where it stops breaking.

Same problem with private mail.

Is your mattermost installation relaying all mail through smtp.send-box.ru? Maybe this SMTP server adds some additional headers or does something with the mails which would result in this behaviour.

I must admit I’m a bit lost on that, would it be OK if I try to register your e-mail address krhamtsov.ilya@gmail.com on one of my demo installations so you can check the mails there? I will send you the initial invite mail and once you signed up, you can click on “forget password” then to see if you will receive the mail from there without issues so we can further narrow this problem down.