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Can not send email in Thunderbird

  • 3 odgovori
  • 0 ima to težavo
  • 1 ogled
  • Zadnji odgovor od christ1

djbilek
djbilek
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Can receive but not send email in Thunderbird. Get the send message error "Sending of the message failed. Certification key usage inadequate for attempted operation. The certification related to 127.0.0.1 must be corrected." Am using Thunderbird on only one computer, running Windows 10, with the Proton mail bridge, which appears to be working correctly on other computers/devices, can send email through other programs as usual with same email addresses. Am totally unfamiliar with this error, really don't know what to do or what to check or how to diagnose. Have tried booting in safe mode, have disabled ESET antivirus, no effect. I do not have an IT department. Any suggestions greatly appreciated.

Can receive but not send email in Thunderbird. Get the send message error "Sending of the message failed. Certification key usage inadequate for attempted operation. The certification related to 127.0.0.1 must be corrected." Am using Thunderbird on only one computer, running Windows 10, with the Proton mail bridge, which appears to be working correctly on other computers/devices, can send email through other programs as usual with same email addresses. Am totally unfamiliar with this error, really don't know what to do or what to check or how to diagnose. Have tried booting in safe mode, have disabled ESET antivirus, no effect. I do not have an IT department. Any suggestions greatly appreciated.

Vsi odgovori (3)

christ1
christ1
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Try to disable SSL filtering in ESET. https://support.eset.com/en/kb3126-disable-ssl-filtering-in-eset-windows-products

djbilek
djbilek Lastnik vprašanja
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Thank you for the idea, but no solution same problem. In my original post I mentioned I had already tried completely disabling ESET and that did not work either.

christ1
christ1
  • Top 25 Contributor
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Try to start Windows 10 in safe mode with networking enabled.

Does the problem go away?

Windows safe mode disables anti-virus software. This is a troubleshooting step, not a solution.