Forum Discussion
Exchange Classic Hybrid and AutoDiscovery Requirements
Guys, I am planning on using Outlook 2016 and Outlook 365 on my estate with Exchange classic Hybrid. All mail flow will still come through our on-premise Exchange server however this will be the 1st ...
Hi, take a look at this. https://docs.microsoft.com/en-us/exchange/hybrid-deployment-prerequisites
Shows you the pre-requisites for Exchange Hybrid including autodiscover. You will need autodiscover published externally for hybrid to work correctly, and you will require a public SSL cert - a wildcard or a SAN cert work best.