Cannot configure evolution with Exchange

Ask Fedora
1

I am not able to configure Evolution with Exchange. When I press ‘Fetch URL’ button, it gives:

Autodiscovery query failed.

The reported error was “6 Error performing TLS handshake: The Diffie-Hellman prime sent by the server is not acceptable (not long enough)

Installed packages are:
$ rpm -qa|grep -evolution
evolution-data-server-langpacks-3.38.1-1.fc33.noarch
evolution-data-server-3.38.1-1.fc33.x86_64
evolution-langpacks-3.38.1-1.fc33.noarch
evolution-3.38.1-1.fc33.x86_64
evolution-ews-langpacks-3.38.1-1.fc33.noarch
evolution-ews-3.38.1-1.fc33.x86_64

Thank you

1 Like
2

There’s a similar issue:
1549242 – SSL connection failure: The Diffie-Hellman prime sent by the server is not acceptable (not long enough).

Possible workaround:
Changes/StrongCryptoSettings2 - Fedora Project Wiki

3

As root, I ran ‘update-crypto-policies --set LEGACY’. I rebooted OS. I tried to add an account with Exchange Web Services type, but it didn’t work.

1 Like
5

Hi
Had same problem after updating Fedora 32->33 with ‘Diffie-Hellmann to short’ with IMAP-Accounts and TLS-Handshaking. Set up a test machine with Fedora 33 and Evolution → still same problem.

Solution: start Terminal. As superuser type ‘update-crypto-policies --set LEGACY’ and reboot system.

Now both two systems works fine.

Regards,
Chris

1 Like
6

I ran the command ‘update-crypto-policies --set LEGACY’ and rebooted the system. Now, it is showing:

update-crypto-policies --show

LEGACY

It gave me the same error when I tried to add an account for Exchange. I am using ‘Exchange Web Services’ as Server Type.

7

I hope somebody is using Evolution 3.38 with Exchange on Fedora 33.

8

Hi,
i’m running Evolution 3.38.1 on Fedora 33 without Problems.
Exchange Server connects as in 32 before, all ist fine.

9

Hello,

I did the following:

update-crypto-policies --set DEFAULT:FEDORA32

OS rebooted.

update-crypto-policies --show

DEFAULT:FEDORA32

I installed evolution as RPM format and not as Flatpak.

Evolution worked fine with me.

1 Like