Forum Discussion
Exchange Hybrid without publishing Autodiscover externally
Hello, We are planning Exchange Hybrid with Exchange 2016 setup. Security team is concerned about opening incoming 443 ports to internal environment. No external user access is allowed. We are al...
Thanks! We are looking into it.
We are planning to remove External ECP url in order to restrict access from public network.
Please advice us.
- Hi there,
Instructions for Exchange 2016 are here: https://docs.microsoft.com/en-us/Exchange/architecture/client-access/disable-exchange-admin-center-access?view=exchserver-2016
New instructions specific to Exchange 2019 are to use Client Access Rules instead, which is a nice new way to get familiar with since these rules can have lots of other use cases too, and they're also ready to be harnessed in EXO:
https://docs.microsoft.com/en-us/Exchange/architecture/client-access/disable-exchange-admin-center-access?view=exchserver-2019 (links to this page: https://docs.microsoft.com/en-us/Exchange/clients/client-access-rules/client-access-rules?view=exchserver-2019)
