Hello,

We would like to use our FortiGate as our Load Balancer. Sadly FortiGate can only perform HTTP-Checks. How is it possible to check /owa/healthcheck.htm at HTTP instead of HTTPS?

Hi involatus ,

Thank you for your question.

by my understanding, you want to change Https to Http when you logon OWA/healthcheck.html Exchange , (if we are misunderstand, please be free to let me know.)  healthcheck.htm does not actually exist within the virtual directories; it is generated in-memory based on the component state of the protocol in question. So we think we could modified the SSL of OWA to achieve it:

1. Open IIS and navigate to Default Web Site>OWA;
2. Choose IIS setting and unlock Require SSL,
3. Then we must run IISReset /noforce to restart IIS.

Notice: After we configure IIS, all user use http logon OWA instead of https.

we could refer to the following link:

http://blogs.technet.com/b/exchange/archive/2014/03/05/load-balancing-in-exchange-2013.aspx

If there are any questions regarding this issue, please be free to let me know. 

Best Regard,

Jim