Mozilla Thunderbird 3.1.20 can not longer verify the integrity of a Let'sEncrypt certificate, tells me that would be expired while in fact it is not, does not allow me to create an account

When I tested that connection the last time with 0.4.13RC44, this did not happen yet.

I don't know whether we see a reactos regression here, or whether that server changed its crypto toolchain somehow, since the last test.

I tried to do a connection to an email hosted at "gmx.de" server.
It tells me that the cert would be expired already, but it is not in fact.

Maybe we should retest 0.4.13rls again to tell for sure, whether it is a regression.
0.4.14-RC-123-g75e9ac7_gcc4_7_2linux_affected.png
0.4.14-RC-123-g75e9ac7_gcc4_7_2linux_affected.log
certificate_algorithm.png SHA256 with RSA
Unfortunately I found no fancy crypto loggings in that log at all

Observed result
ros complains about the cert, and then does not allow me anymore to "create the account", the button is greyed out

Expected result
2k3sp2 complains about the certificate as well, contrary to ros, it does still allow me to create an account afterwards
2K3_SP2_eng_alsoComplainsAboutTheCert_butAllowsMeToCreateAnAccount_ok.png
it can retrieve mails after that