TLS 1.0 and 1.1 cannot acess GMX EMALES HOW TO UPGRADE TO TLS 1.2 OR 1.3
I have TB 91. set to a pop server using SSL/TLS but got a message from gmx saying I will not be able to receive emails on TB AS IT USES OUTDATED SECURITY ... After the protocols TLS1.0 and TLS1.1 have been deactivated, the transfer of emails between your affected device or program and our GMX servers will no longer work; i.e. no emails will be transmitted to or from your GMX email account using TLS 1.0 and TLS 1.1. Third-party email programs such as Outlook, Thunderbird or pre-installed apps in which you have set up your GMX email account.We recommend that you only use newer devices and programs that support the latest TLS 1.2 or 1.3 encryption protocols and transfer your emails securely. How do I change this in TB to continue to receive emails please? M Hunt
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When Thunderbird updated to version 78.0 (end of 2020) it auto disabled TLS 1.0 and 1.1, so using TLS 1.2 https://www.thunderbird.net/en-US/thunderbird/78.0/releasenotes/
You would have manually needed to make alterations to preferences just to allow those old ones to operate. https://support.mozilla.org/en-US/kb/thunderbird-78-faq
If you are using latest Thunderbird then you should not have any problems.
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