dovecot - Dec 2019 - About "received" header when using Dovecot proxy

> On 2 Dec 2019, at 19.23, Tom Sommer via dovecot <dovecot at
dovecot.org> wrote:
> 
> 
> On 2019-12-02 13:42, Riku via dovecot wrote:
>> Hello.
>> My name is Riku.
>> Currently, I use Dovecot as a proxy for another SMTP server.
>> However, this seems to cause the IP address of the "received"
header
>> to be that of the proxy server.
>> Is it possible to change this so that the IP address of the sender is
entered?
>> The version of Dovecot is "2.3.8 (9df20d2db)".
>> Sorry for the incomprehensible explanation.
> 
> This has been discussed a few times on the list already, and I believe
there is a fix coming at some point: https://github.com/dovecot/core/pull/74
> 
> Currently there is none

This change does not allow you to edit the received header, it's only about
not adding it at all.

and the change seems to be on the list for 2.3.9

Sami

Hello.

Thank you for teaching.
I'd like to try it out if 2.3.9 comes out.
I look forward to the release of 2.3.9.
Thank you very much.

Best regards.

Hello.

Sorry.
Since 2.3.9 was released, I installed it immediately and tried to set
"lmtp_add_received_header" to "no".
But it seems different from what I wanted to do.
The following is my configuration file.
Please let me know if there are any other configuration files that need to be
listed.
Is there any way to avoid adding it to the ?received? header?

----- 20-submission.conf -----
submission_client_workarounds = whitespace-before-path mailbox-for-path

protocol submission {
  passdb {
    driver = static
    args = proxy=y host=smtp.example.com nopassword=y
  }
}
--------------------

Best regards.