Hi,

I don't understand how the External_Postfix_relay server could send XCLIENT commands to the final postfix server ?
is there some modifications to do in the master.cf file ?

Regards,

On 08/10/2023 22:19, Wietse Venema via Postfix-users wrote:
testeur via Postfix-users:
Hi,

I try to find a solution to forward the IP source from the postfix relay
to the final postfix server (internal).

Mail_Message sent to -> External_Postfix_relay (ip source from client
ok) -> Internal_Postfix_server (ip source from external postfix relay,
not the one from client's mail_message)

How can i do that ?
If you want to propagate the remote SMTP client IP address or the
External_Postfix_relay server IP address, the External_Postfix_relay
server could send XCLIENT commands to the final postfix server
(internal). See https://www.postfix.org/XCLIENT_README.html

Or you could use Postfix's HaProxy protocol support in the final
postfix server (internal) to get a similar result.

        Wietse
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