Can anyone help how I can instruct Exchange 2013 to include X-Forwarded-For header in mail headers. Usually as per standard, X-Originating-IP is added in mail headers. However, when Exchange 2013 OWA URL is load balanced using F5 (or any other hardware load balancer), X-Originating-IP would point to load balancer self IP. There is a feature in load balancers to add X-Forwarded-For header when HTTP packets are forwarded to CAS servers by F5. Exchange 2013 is able to detect original client IP in IIS logs through X-Forwarded-For header, but this headers is not captured by Exchange.

Regards,

Ramesh

Hi,

To log the real client IP in the IIS hit logs

http://blogs.iis.net/deanc/archive/2013/07/08/iis7-8-logging-the-real-client-ip-in-the-iis-hit-logs.aspx

Best Regards.