https://www.thunderbird.net/en-US/thunderbird/78.0/releaseno... TLS 1.0 and 1.1 disabled change security.tls.version.min to 2 (TLS 1.1) or 1 (TLS 1.0)
https://www.thunderbird.net/en-US/thunderbird/78.0/releaseno... TLS 1.0 and 1.1 disabled change security.tls.version.min to 2 (TLS 1.1) or 1 (TLS 1.0)