Real IP in header for SMTP Nginx Mail Proxy
mdounin at mdounin.ru
Fri Jan 20 10:59:50 UTC 2017
On Fri, Jan 20, 2017 at 08:09:35AM +0100, Michael Brunner wrote:
> I used the instruction below to build a mail proxy server with nginx:
> I configured it for IMAP, POP3 and SMTP.
> It's working quite well but I don't see the real IP of the sender in the mail header. When a user is sending a mail via SMTP, I see only the following in the mail header:
> X-Sender-Id: _forwarded-from|46.xxx.xx.xx
> For me it's important to see the real IP of the sender in the mail header, otherwise our outgoing spam filter will not like this solution.
> How can I add the real IP of the sender to the mail header?
You can pass the client IP address to the SMTP backend using the
"xclient" directive, see http://nginx.org/r/xclient.
More information about the nginx