> On 25/01/2021 10:12 福田泰葵 <taiki.fukuda@justsystems.com> wrote:
>
>
> Dear Mr. Tuomi
> Google is responding to me as Unauthorized.
> So I need to send my credentials such as access token in the request parameter for authentication in google’s Get User API request.
> But I don’t know how to configure dovecot to achieve that.
> Could you please help me with this?
> Best regards,
>
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Did you try the debugging things I mentioned? Your logs do not indicate that you did.

So,

- Try turning on rawlogs for the oauth2 requests and see what google is sending you?
- You can also try log_debug=category=oauth2 (2.3.13) to get more debug logs from oauth2.

Aki