About "received" header when using Dovecot proxy

[ml at riku22.net]

Hello.

Sorry.
Organize and describe what I want to do.
There may be no unity, but please forgive me.
Also, I'm not good at English, so I'm sorry if it's difficult to understand.

1. I had to create a proxy server for an external SMTP server (here, “smtp.example.com” as an example).
So I decided to use Dovecot installed on my server (in this example, “my-server.com”).
2. Therefore, the following settings were created.

----- /etc/dovecot/conf.d/10-auth.conf -----
auth_mechanisms = plain login cram-md5 apop
!include auth-static.conf.ext
--------------------

----- /etc/dovecot/conf.d/auth-static.conf.ext -----
passdb {
  driver = static
  args = proxy=y nopassword=y
  default_fields = destuser=%u nologin=y starttls=any-cert
}

userdb {
  driver = static
  args = uid=mail gid=mail /home=/dev/null
}
--------------------

----- /etc/dovecot/conf.d/10-ssl.conf -----
ssl = yes
ssl_cert = </etc/letsencrypt/live/my-server.com/fullchain.pem
ssl_key = </etc/letsencrypt/live/my-server.com/privkey.pem
--------------------

----- /etc/dovecot/conf.d/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
  }
}
--------------------

3. With the above settings, when my mailer connects to "my-server.com", it can connect to "smtp.example.com" and send / receive via SMTP.
4. However, in this case, the value of the mail header "received" will be as follows.

Received: from my-server.com (my-server.com [<my-server.com IP address>]) ...

I want the IP address of the sender (my computer here) to be displayed properly in the contents of this "received" like this.

Received: from riku22.net (xxxxx.bbtec.net [126.125.xxx.xxx])


Is there any way?

Best regards.