We recently deployed into AWS, and were following
<https://www.agari.com/scaling-postfix-on-aws-with-elastic-load-balancing/>.
However, we found that if we set postscreen_upstream_proxy_protocol=haproxy
we are then no longer able to connect directly to the MTAs to send mail.
Is there any ability to support a mixed mode, where some clients are coming
in via an upstream proxy and some are not?
--Quanah
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Quanah Gibson-Mount
Platform Architect
Manager, Systems Team
Zimbra, Inc.
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Zimbra :: the leader in open source messaging and collaboration
A division of Synacor, Inc