HAProxy + SMTP

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From: Michael Nguyen <michaeln#twentyten.org>
Date: Tue, 08 Jan 2008 12:05:43 -0800

So, I've recently moved to using HAProxy as a load balancer, but I've run into an issue with SMTP. I have the following:

HAProxy --> Many SMTP servers (front-end MX servers)

The problem here comes with SPF and RBL checks. The SMTP servers only see the IP address of the HAProxy load balancer and thus my SPF and RBL checks will never work. Those of you who use HAProxy for SMTP traffic, what route do you take to solve this?

Michael Received on 2008/01/08 21:05