F5 mapi over http Preauthentication failed via APM

Hello dave,

Thanks for your answer.

I've done the configuration using Iapp 1.02 (we use basic authentication + ntlmv2).

but mapi authentication on F5 DMZ still failed via APM.

for testing i've used https://testconnectivity.microsoft.com/.

error message is : "Testing the address book "Check Name" operation for user xxx against server xxx. An error occurred while attempting to resolve the name".

see attached the diagram of the VPE.

Thanks,