If your Thunderbird email client is not sending (SMTP) or receiving (POP3 or IMAP) email we have found the most likely reason for this to be caused by Thunderbird sending old, outdated SSL/TLS certificates when authenticating with the Farbyte email hosting servers.
To fix the issue, perform the following:
- In Thunderbird go to Tools -> Options
- Click Advanced -> Certificates tab
- IMPORTANT: Uncheck the Query OCSP responder servers to confirm the current validity of certificates
- Click Manage Certificates
- In the Servers tab, delete all certificates relating to your domain/s hosted with Farbyte
- Click OK
- Click OK again to close the
- Click any Farbyte hosted email account to start the IMAP/POP3 receive process. Thunderbird will try to connect to the email server and ask you to accept the certificate. Ensure that Permanently store this exception is checked, then click Confirm Security Exception.
- Send an email (SMPT) and accept the certificate when asked as done for the IMAP/POP3 above.
After accepting the new Farbyte email server certificates your email should be working fine.
However, if you are still experiencing problems, please contact Farbyte support.