Once upon a time in a land far, far away I wrote an article that told our action packed supportability story about the relationship of firewalls and Exchange servers. While the majority of response...
Updated Jul 01, 2019
Version 2.0
Blog Post
Even though that all Exchange servers across an entire organization's deployment are seen "as one organic entity", it would be helpful to have a full picture of all ports being used by Exchange.
No serious administrator wants to configure port restriction that interfere with an Exchange deployment, but maybe it is a requirement to control and configure only the ports necessary. After 30 month down the road after RTM there is still no official port
diagram.
This should not be that complicated, as each Exchange server is acting as an Island. Isn't it?