Extend the Hybrid Exchange Agent to support hybrid mail flow
The (new) hybrid architecture simplifies network connectivity by leveraging the same principles as the Azure AD App Proxy. However, it only works for (inbound) HTTP connections used for Free/Busy and Mailbox Moves. Most hybrid deployments also use (hybrid) mail flow and would still require some sort of inbound connectivity to either Exchange or the Edge Transport servers. As such, the current implementation of the solution only solves half of the issue.
Please, support this idea if you believe it would be a valuable addition to the solution. More specifically, I am hoping to solve the following challenges:
1. Require inbound connectivity to Exchange or Edge Transport servers from Office 365
2. Remove the need for Edge Transport servers for organizations that require inbound connections to be terminated in the DMZ/perimeter network.
3. Use a unified architecture for all hybrid workloads in Exchange
Vincent Martroye commented
Thomas Stensitzki commented
That would be a interesting solution. Maybe the agent could deliver and query for emails using REST. Just remove the requirement for EDGE Servers by implementing a totally different solution for centralized "mail flow".