Password mismatch after upgrade to Ubuntu Focal

[Jeffrey van Doesburg]

On Mon, 2020-06-15 at 12:24 +0200, Jeffrey van Doesburg wrote:
> Hi!
> 
> Today I upgraded one of our Dovecot servers from Ubuntu 18.04 to
> Ubuntu
> 20.04. After the upgrade I have login issues because the password
> didn't match.
> 
> I also installed Dovecot on a clean Ubuntu 20.04 server with the same
> configuration files. And here I also got the password match issue.
> 
> We're using LDAP for managing the login credentials and I'm 100% sure
> the password is correct. With the debug options on, you will see
> something like this:
> 
> CRYPT(<PLAIN_TEXT_PASSWORD>) != '$6$<SECRET_PASSWORD_HASH>'
> 
> Does somebody know if there are know issues with Dovecot 2.3.7.2-
> 1ubuntu3.1 on Ubuntu 20.04 and with the LDAP driver?
> 
> 

Hi,

Little update about the "password mismatch" error. I tried different
versions of Dovecot on Ubuntu 18.04 and 20.04. And it looks like it's
something in Ubuntu that cause the error. Because Dovecot 2.3.10.1
works fine on Bionic and on Focal it gives a "password mismatch"
message.

Focal:
- 2.3.7.2-1ubuntu3.1 from Ubuntu main repo (Password Mismatch)
- 2.3.10.1 compiled from source (Password Mismatch)

Bionic:
- 2.2.33.2-1ubuntu4.5 from Ubuntu main repo (IMAP works)
- 2.3.10.1 compiled from source (IMAP works)

If someone has a clue, I would like to hear it! :)