Yes. In my last email, I sent you the log of the result of running with oauth debug logging enabled.

/etc/dovecot/conf.d/10-logging.conf:

##
## Logging verbosity and debugging.
##

# Log filter is a space-separated list conditions. If any of the conditions
# match, the log filter matches (i.e. they're ORed together). Parenthesis
# are supported if multiple conditions need to be matched together.
# Supported conditions are:
#  event:<name wildcard> - Match event name. '*' and '?' wildcards supported.
#  source:<filename>[:<line number>] - Match source code filename [and line]
#  field:<key>=<value wildcard> - Match field key to a value. Can be specified
#    multiple times to match multiple keys.
#  cat[egory]:<value> - Match a category. Can be specified multiple times to
#    match multiple categories.
# For example: event:http_request_* (cat:error cat:storage)

# Filter to specify what debug logging to enable. This will eventually replace
# mail_debug and auth_debug settings.
log_debug=category=oauth2

〒163-6017 東京都新宿区西新宿6-8-1 住友不動産新宿オークタワー
株式会社 ジャストシステム 技術企画室 情報システムグループ 福田泰葵
e-mail: taiki.fukuda@justsystems.com
内線: 5158
TEL: 03-5324-7900
mobile: 080-6198-7328



2021年1月25日(月) 17:24 福田泰葵 <taiki.fukuda@justsystems.com>:
Yes. In my last email, I sent you the log of the result of running with oauth debug logging enabled.

/etc/dovecot/conf.d/10-logging.conf:

```
```


---------------------------------------------------------------------------------------------------------------------------------
〒163-6017 東京都新宿区西新宿6-8-1 住友不動産新宿オークタワー
株式会社 ジャストシステム  技術企画室 情報システムグループ  福田泰葵
内線: 5158
TEL: 03-5324-7900
mobile: 080-6198-7328
---------------------------------------------------------------------------------------------------------------------------------


2021年1月25日(月) 17:16 Aki Tuomi <aki.tuomi@open-xchange.com>:

> 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,
>
> ------------------------------
> 〒163-6017 東京都新宿区西新宿6-8-1 住友不動産新宿オークタワー
> 株式会社 ジャストシステム 技術企画室 情報システムグループ 福田泰葵
> e-mail: taiki.fukuda@justsystems.com
> 内線: 5158
> TEL: 03-5324-7900
>
> mobile: 080-6198-7328


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