2017 and later versions)īy default, Outlook will try one or more of these methods if it can't reach Autodiscover. Direct Connect to Microsoft 365 (new for Outlook 2016 version. Cached URL in the Outlook profile (new for Outlook 2010 version.The currently implemented methods used by Outlook are: When Outlook tries to contact the Autodiscover service on the Exchange server with the Client Access Server (CAS) role, it can use several different methods to reach the service, depending on the client-server topology. Don’t forget to follow us and share this article.When Microsoft Outlook tries to retrieve Autodiscover information from a server that's running Microsoft Exchange Server, you may experience unexpected results if you're using one or more of the available registry values that can be used to control Autodiscover. If all mailboxes are in the cloud, autodiscover can be pointed to Exchange Online.ĭid you enjoy this article? You may also like Find IP addresses using Exchange SMTP relay. Make sure that you point the autodiscover URL to the Exchange on-premises server as long as you have mailboxes located on-premises. You learned when and how to set up autodiscover URL in Exchange Hybrid deployment. Read more: Configure Internal and External URL in Exchange Server » Conclusion Minimum = 9ms, Maximum = 15ms, Average = 11ms Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Īpproximate round trip times in milli-seconds: Ensure you get a reply from an external IP address and not the internal load balancer or Exchange Server. On an internal machine, ping the autodiscover DNS record. Remove the autodiscover DNS entries in the internal DNS. Verify that the DNS record is published correctly. Record TypeĪfter 5 to 10 minutes, check the record with the MxToolbox CNAME lookup. This is the default autodiscover record for Exchange Online. C:\>iisreset Public DNS autodiscoverĬonfigure the autodiscover CNAME record in Public DNS. Restart the Internet Information Services (IIS). C:\>Get-ClientAccessServer | Select Identity, AutoDiscoverServiceInternalUri, AutoDiscoverSiteScope | Format-ListĪutoDiscoverSiteScope : In our example, there are two Exchange Servers in the organization. Use the Get-ClientAccessServer cmdlet to check the autodiscover internal URL. However, if it’s not set up correctly, configure the autodiscover internal URL, public DNS autodiscover, and internal DNS autodiscover entries. Most of the time, you will not have to edit anything because it’s already set. Exchange on-premises will automatically direct clients to autodiscover for Exchange Online. Point autodiscover URL to Exchange on-premisesĭo you have mailboxes in Exchange on-premises only or both the mailboxes on-premises and in the cloud? Point the autodiscover URL to the Exchange on-premises server. Also, remove the internal DNS entries which point to the autodiscover URL. You have to do that with Exchange Management Shell (PowerShell). That’s when you want to null the autodiscover internal URL in the Exchange on-premises server. *After migrating all the mailboxes to Exchange Online, and everything works as expected, you can point the autodiscover URL to Exchange Online. In the table below, you can see where to point your autodiscover URL to in an Exchange Hybrid deployment.
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