How to accept a new ssl certificate in Thunderbird?

7.15.15
I can't get or send emails on my cell phone two days ago.
- Neither the "Configuration Options for certificates" worked to bring in the certificate that I use that allows you to send and receive e-mail. Under the "Digital Signature" or "Encryption" when I press "Select" to select a certificate, I get the pop-up message "Certificate Manager cannot locate a valid certificate... ». When I press 'View certificates' certificate that I use is listed under 'Servers' and the 'authorities' and is up to date.
-In addition, under Tools - Options - Advanced - certificates for: "when a server requests my personal certificate", I selected "Ask Me every time" and left "query OSCP responder servers to confirm...". ', the box is checked.

I think that this problem is bound to accept a new ssl certificate has been recently renewed. I've never had this problem before. How to start accepting a new certificate?

Thank you.

No you can not communicate with the server using a common product of Mozilla. In a short while you will not be able to co interact with it with any product. The operator/administrator of the server needs to fix their server to issue certificates 1024-bit or better. Or stop using TLS.

The best explanation of this change and it's because I've seen is here https://weakdh.org/
(right at the bottom of the page is what you need to do stuff)

In essence, that the server does not have a security flaw serious patched and Mozilla products have been modified to not interact with servers that have not corrected the vulnerability. Vulnerability leaves you open to man in the middle attack on piracy.

Tags: Thunderbird

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