Usually, the Exchange external Autodiscover DNS entity is configured as a regular A or CNAME record. In some cases, a service record (SRV) is used instead. Here is a simple syntax of quickly querying for the SRV record:

Many of us are using the HOSTS file for ages. However, not many people know about this “feature”.

So let’s see how it works. Often we use the hosts file to test new implementations, changes to an existing system and so on. During Office 365 implementations we need to have some C-Name record, so how do we test that by using just hosts files before we do any real DNS changes?

Jeff Guillet, from “The EXPTA {blog}“, just published version 2.0 of his Set-Autodiscover.ps1 script to the TechNet Gallery. This is a complete rewrite of the old script and includes the following new features:

• Made setting the new values easier by cloning an existing server
• Now also configures Outlook Anywhere and all Exchange virtual directory internal and external URLs
• Revised verbiage and use *-ClientAccessService cmdlets for Exchange 2016
• Added -Verbose output to display the values we’re configuring
• Improved overall display output