I recently configure HAProxy in front of Zimbra to do load balance for 2 Zimbra Proxy server. This HAProxy role intended to load balance SMTP, HTTPS (webadmin and webclient) and IMAP.
I have successfully configure SMTP with HAPoxy Proxy Protocol using below reference: https://www.haproxy.com/blog/efficient-smtp-relay-infrastructure-with-postfix-and-load-balancers/ and very satisfied with result as I can see Real Client IP on log.
I was thinking if this Proxy Protocol also could be implemented in NGINX, and as far as I know NGINX supported for proxy protocol. Is there any success story or workaround how to get Real Client IP on Zimbra Proxy when it configured behind the HAProxy? Any thought or comment are much appreciated.
Discuss your pilot or production implementation with other Zimbra admins or our engineers.
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