https://techcommunity.microsoft.com/discussions/exchange_general/exrca-autodiscover-test-failure/4426322
EXRCA autodiscover test failure | Microsoft Community Hub
Preparing to configure Exchange Hybrid between the On-Prem Environment and O365 we ran the ExRCA connectivity test for outlook access.The test fails at the...
microsoft communityautodiscovertestfailurehub