Public bug reported:
$ gnutls-cli -p 587 smtp.outflux.net -s --print-cert
STARTTLS
ctrl-D
*** Starting TLS handshake
*** Fatal error: The signature algorithm is not supported.
*** Handshake has failed
This does not happen with 2.12.23-12ubuntu2.3.
$ echo QUIT | openssl s_client -connect smtp.outflux.net:587 -starttls smtp
-showcerts 2>/dev/null | openssl x509 -noout -text
...
Signature Algorithm: sha512WithRSAEncryption
...
Public Key Algorithm: rsaEncryption
...
There's no MD5 visible.
** Affects: gnutls26 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1532911
Title:
[regression] 2.12.23-12ubuntu2.4 breaks sha512 certificates
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