sandeep pawar via Postfix-users:
> Planning to add Haproxy server for resiliency to better control backend
> postfix relay servers for some of the clients like Java/GO
> Java clients -> Haproxy -> Postfix relays with policy service -> other SMTP
> servers -> internet
With that configuration, HAproxy will send the Java client IP address
to the Postfix relays.
There is no need to use postscreen. The non-postscreen SMTP daemons
support the HAproxy protocol when they are configured with
"smtpd_upstream_proxy_protocol = haproxy", and the check_policy_service
feature will provide the Jave client IP address to the policy server.
Wietse
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