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UF Exchange hosts more than 250 third-level domains and many are used as primary email addresses in departments. With the most recent Office releases (Windows and Mac) as well as many mobile apps, Microsoft and third-party's are relying on an Exchange component, the Autodiscover service, to configure client profiles and devices. 


Microsoft describes the Autodiscover service as:


"The Exchange Autodiscover service provides an easy way for your client application to configure itself with minimal user input. Most users know their email address and password, and with those two pieces of information, you can retrieve all the other details you need to get up and running."


Clients locate the Autodiscover service by using DNS queries against different names in the clients primary SMTP address. When a user enters their email address as say -- -- the client will try to locate an Autodiscover service by first connecting to and failing that will next try When the client locates one of these services it will authenticate with the users credentials and the Exchange server will return an xml document to the client with server URLs for the various Exchange components. The client will use that document to configure itself and is fully configured with only having to had provided their email address and password.


Implementing a Autodiscover  record for your domain(s).


UFIT provides a redirect service that departments can use to implement Autodiscover for their third-level domains. To use this service you will need to create a CNAME record for each domain you have in UF Exchange. If UFIT hosts your DNS this can be requested via myIT. The format of the record should be:


CNAME pointing to or IN CNAME


Here is an example of a correctly configured record.


Jamess-MacBook-Air:~ oulman$ nslookup




Non-authoritative answer: canonical name =








Q: Why are my domain-joined clients not impacted if I don't have an autodiscover DNS name defined?

A: Domain joined clients utilize Active Directory records to locate Autodiscover services regardless of primary SMTP address. Only non-domain joined computers and mobile devices are typically impacted.


Q: My users are receiving a pop-up that a server " is trying to configure their client. Why is this happening?

A: The service redirects clients from http to https at a different server ( If you manage your non-domain-joined clients you can suppress this warning via Group Policy.​

 Last modified at 11/30/2015 2:19 PM by Oulman,James F