'403.7 forbidden access denied on exchange server 2019 error with reverse proxy when certificate based authentication enabled
I have exchange server 2019 on windows server 2019 and we have certificate based authentication enabled for exchange server. When I am trying to access the OWA endpoint on browser, it is working as expected(i.e. once supply the certificate, it will authenticate successfully).
We have a reverse proxy server with ARR on IIS that we use to access this exchange server but when we try to access the exchange server OWA endpoint via proxy, it will ask for certificate once we will supply it, it through (HttpStatus="403", HttpReason="Forbidden", HttpSubStatus="7", ErrorCode="Access is denied. ) 403 forbidden error.
Failed log request headers screenshot.
Sources
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