Best practice: Enabling autodiscovery

Make sure that

Microsoft Exchange

Autodiscover is set up correctly. For more information, see the

Microsoft

documentation for

Microsoft Exchange

.

In a

Microsoft Exchange

environment: Make sure that the autodiscover URL routes to one of the Exchange client access server (CAS) servers. If your environment uses a load balancer, make sure that the Auto Discover URL routes to the load balancer and then route it to your group of CAS servers.

In a mixed

Microsoft Exchange

environment (for example,

Microsoft Exchange Server

2016 and 2019) environment: Make sure that the autodiscover URL routes to the latest version of the CAS servers (for example, the

Microsoft Exchange Server

2019).

In a cloud-based

Microsoft Exchange

environment: the autodiscover URLs are typically managed by

Microsoft

, however if your environment migrated your domain to a cloud-based

Microsoft Exchange

, make sure that the domain autodiscover URL routes to

Microsoft

's autodiscover URL (for example, https://autodiscover-s.outlook.com). In the DNS admin portal, make sure a CNAME record is created and that it redirects https://autodiscover-s.<

domain

>/autodiscover/autodiscover.svc to https://autodiscover-s.outlook.com.

In a cloud-based

Microsoft Exchange

environment: the autodiscover URLs are typically managed by

Microsoft

, however if your environment migrated your domain to a cloud-based

Microsoft Exchange

, make sure that the domain autodiscover URL routes to

Microsoft

's autodiscover URL (for example, https://autodiscover-s.outlook.com). In the DNS admin portal, make sure a CNAME record is created and that it redirects https://autodiscover.<

mydomain

>/autodiscover/autodiscover.xml to https://autodiscover-s.outlook.com.

In a cloud-based

Microsoft Exchange

hybrid environment: mailboxes can exist in both on-premises

Microsoft Exchange

and cloud-based

Microsoft Exchange

. Make sure that the autodiscover URL routes to the on-premises

Microsoft Exchange Server

.