This issue is not coming from Evolution itself. It also manifests itself when attempting to create an Exchange account using the Settings -> Online Accounts -> Add an account -> Microsoft Exchange option. In this case, if the mail server returns a small Diffie-Hellman prime (e.g. 1024 bytes) the handshake fails and the error message reported is:
Error Connecting to Microsoft Exchange server: Code:6 -- Unexpected response from server I have encountered the same problem in Fedora some time ago and in this case the solution was to modify the system wide security level to legacy by using the following command after installing the crypto-policies package: update-crypto-policies --set LEGACY see: https://bugzilla.redhat.com/show_bug.cgi?id=1549242 However, in the case of Ubuntu 20.04 this does not resolve the problem. ** Bug watch added: Red Hat Bugzilla #1549242 https://bugzilla.redhat.com/show_bug.cgi?id=1549242 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1866974 Title: The Diffie-Hellman prime sent by the server is not acceptable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evolution/+bug/1866974/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
