In this session Dave Stork will discuss the upcoming challenges that organizations will have to face when they are a Hybrid Organization and still have on-premises Exchange Server.

Support for Exchange Server 2016 and 2019 will end in October 2025 and hybrid mail flow from unsupported versions of Exchange Servers will be throttled and eventually blocked by Exchange Online.

Do you need to upgrade to Exchange Server Subscription Edition?
Can you get completely rid of your on-premises Exchange servers?
Do you want to or is it even possible in your situation?
How will you manage mail relaying from your on-premises applications?
And what about External Recipient Restrictions and High-Volume Email enforcement?

After this session attendees will have insight into what challenges they might have, and which solutions might be possible.

Exchange Server 2016/2019 will have no support on 14 October 2025, and the successor Exchange Server Subscription Edition will be released at the beginning of second half of 2025. So, more information could be available at that time and that might change some things.