I was able to access Internal exchange using guide by this link (thank you)
A little bit more modification was required, as WAF rule was being kicked again and again. Mostly, OWA works now, but not ECP.
The ECP seems to be hitting some WAF error as below -
This is my ECP and other rule page. What am I doing wrong?
Hi Nitin Mirchandani The guide has been created by our fellow community member and shared expertise.FormerMember It would be great if you could share the further response.
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Solved this by having one more exception -