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Failure sending email in Thunderbird

  • 2 uphendule
  • 1 inale nkinga
  • Igcine ukuphendulwa ngu tsputo50

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When I try to send email I get this, and I cannot send the email : "Login to server with username (my email username) failed. I can however receive email.

Everything was cool this morning, but the problem started later in the day. It asks me to reenter my password, but that does not solve the problem. I can send email from the Gmail app however.

My ISP is AT&T DSL. OS is Win10 Pro. I'm using Windows Security, will not work with firewalls on or off. Version of Thunderbird is 78.8.0 Last update was 02 March, and I was able to send after that update. I tried resetting the TLS to 1 from 3, and that didn't help.

Screenshot is attached. Please help!!!

Ama-screenshot ananyekiwe

All Replies (2)

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Change the authentication method to OAuth2 for the incoming and outgoing, check that cookies are allowed in TB Options/Privacy & Security, remove the passwords from Saved Passwords in Options, restart TB and enter the account password in the OAuth window when prompted.


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Didn't help, just changed the error message to:

Sending of the message failed. Failed due to unexpected error 80004005. No description is available. The message could not be sent using Outgoing server (SMTP) for an unknown reason. Please verify that your Outgoing server (SMTP) settings are correct and try again.

I've tried this with both "googlemail" and "gmail" so that isn't it.

What is killing me is that my wife on her computer is running the same version of TB, using the same incoming and outgoing settings as me, and she is not having this problem. I reinstalled (over the current install) a new install of TB and that didn't help.

I rolled my computer back a week by doing a restore. Didn't help.

I have reset my Google password, that didn't help.

I'm at a complete loss. Could it be that the gmail smtp server is just being a punk.


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