ExcludeExplicitO365Endpoint (only applies to Outlook 2016 version.ExcludeLastKnownGoodURL (only applies to Outlook 2010 version.On windows you can finetune autodiscovery via: MS Office for MAC or Windows).įor example if you wish to disable the AutoDiscovery on a MAC you can follow the howto here. There are multiple 'configuration' options which you can perform which depends on your environment and on your clients (e.g. Create registry entries defining the Autodiscover behavior (excluding SCP lookup, etc) on the clients.Used AD UC to reconfigure an AD user account clearing the attributes homeMDB and homeMTA.Used ADSI Edit to delete CN=%Exchange server hostname%,CN=Autodiscover,CN=Protocols,CN=%Exchange server hostname%,CN=Servers,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=%AD DS NetBIOS domain name%,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=%AD DS DNS middle-level domain name%,DC=%AD DS DNS top-level domain name%.Used EMS to set the CAS' Autodiscover service internal URI to null.Thus far, I have done the following which hasn't worked: We need to prevent AD domain-connected PCs' email apps (Microsoft Outlook, etc) from Autodiscovering to the old Exchange server.

We are keeping the old Exchange server running for the time being in case any further data needs to be migrated.

We have migrated a client from and on-premises Exchange Server 2010 to and Office 365.

Mac mail exchange 2017