Kerberos - Exchange

Hello.

I am trying to find and get all the information about how Kerberos works when using Exchange.

Can you please advise - what are the requirements for this?

I have found many topics and the information is different.

  • Someone says that Kerberos only works with the passthru method in TCP mode.

Some say it works in HTTP too, but with additional configuration: Configure Kerberos authentication for load-balanced Client Access services | Microsoft Learn.

Others say that Kerberos works only in the commercial version.

Can you dispel my arguments and compile information how Kerberos works in Haproxy with Exchange ?