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.