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Thunderbird v.45 - Undelivered messages

  • 2 replies
  • 4 have this problem
  • 6 views
  • Last reply by MDuran

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Hi all,

Suddenly, when updating Thunderbird to its newest version (45), the e-mail that I sent to accounts out of my domain are being rejected and I get the following e-mail (for example, my account is myname@domain1.net) :

"Your message

 To:      user@domain1.net, user@domain2.net
 Subject: XXXXX
 Sent:    XXXXX

did not reach the following recipient(s):

user@domain2.net on XXXXX

   The message contains a content type that is not supported
   <XXXX

Body type not supported by Remote Host>"

So the email I just sent reached my colleague with my same account domain but the other recipient didn't get it. However, sending e-mails via Outlook or Webmail works without problems, both users receive the message.

Do you know if it is a known issue of Thunderbird or it could be a problem with our SMTP server?

Thank you in advance for your help. Kind regards.

Hi all, Suddenly, when updating Thunderbird to its newest version (45), the e-mail that I sent to accounts out of my domain are being rejected and I get the following e-mail (for example, my account is myname@domain1.net) : "Your message To: user@domain1.net, user@domain2.net Subject: XXXXX Sent: XXXXX did not reach the following recipient(s): user@domain2.net on XXXXX The message contains a content type that is not supported <XXXX Body type not supported by Remote Host>" So the email I just sent reached my colleague with my same account domain but the other recipient didn't get it. However, sending e-mails via Outlook or Webmail works without problems, both users receive the message. Do you know if it is a known issue of Thunderbird or it could be a problem with our SMTP server? Thank you in advance for your help. Kind regards.

Modified by MDuran

Chosen solution

There's a thread here discussing this 'body type' error. It includes a solution, you might want to try it.

Read this answer in context 👍 2

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Chosen Solution

There's a thread here discussing this 'body type' error. It includes a solution, you might want to try it.

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By the way, you can find the thread with the solution here: https://support.mozilla.org/en-US/questions/1119474#answer-869202