oauth2 passdb user authentication with PLAIN

[Aki Tuomi]

> On 04/10/2022 19:07 EEST Simon <sp12 at 31337.it> wrote:
> 
> 
> I would like to authenticate users that use the PLAIN mechanism against an oauth2 idp (in this case it's an Azure AD B2C).
>  I configured dovecot.conf with
>  

<snip/>

>  
>  
>  So, why does dovecot say "No username returned"? The username is there! Do I have to configure something else?

Hi!

Does it work if you set introspection_mode=local?

Aki