Mozilla VPN is currently experiencing an outage. Our team is actively working to resolve the issue. Please check the status page for real-time updates. Thank you for your patience.

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

The certificate is not trusted because it is self-signed.

  • 1 reply
  • 1 has this problem
  • 26 views
  • Last reply by sfhowes

laxsnoe
laxsnoe
more options

How to use self-signed certificate on Thunderbird 78.3.1 (64-bit), i cannot send email with error.

Sending of the message failed. The certificate is not trusted because it is self-signed. The configuration related to mailserver must be corrected.

How to use self-signed certificate on Thunderbird 78.3.1 (64-bit), i cannot send email with error. Sending of the message failed. The certificate is not trusted because it is self-signed. The configuration related to mailserver must be corrected.

All Replies (1)

sfhowes
sfhowes
  • Top 10 Contributor
more options

See https://support.mozilla.org/en-US/questions/1306292#answer-1354241