Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Als je Windows 10 gebruikt, lees dan dit artikel.

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Error sending message

Thunderbird E-mail verzenden en ontvangen
Matt beantwoord
macconinc
macconinc

I am sending a message with Thunderbird through my email server Yahoo. The sending has worked flawlessly until yesterday afternoon; I am getting the following error.

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.mail.yahoo.com timed out. Try again. 

This works fine with Outlook but not Thunderbird since yesterday afternoon.

Clyde Barre

I am sending a message with Thunderbird through my email server Yahoo. The sending has worked flawlessly until yesterday afternoon; I am getting the following error. Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.mail.yahoo.com timed out. Try again. This works fine with Outlook but not Thunderbird since yesterday afternoon. Clyde Barre

Alle antwoorden (1)

Matt
Matt
  • Top 25-medewerker

That sounds like an antivirus issue. Outlook uses the easily hacked windows security store which antivirus vendors routinely register themselves as authorized certificate issuers without any form of oversight. Thunderbird offer no simply hack for certificates. The acceptance in Thunderbird is a manual process and therefore you have to follow some procedure the antivirus vendor has to add their certificate to the store. Personally I think allowing the antivirus to read all my encrypted messages is a greater risk than having no scanning (so I use a product that does not scan email). But that is my personal choice.