Because of this, Outlook will fall back to utilizing a different method.
The first method is to contact the following DNS records in order (domain = the user’s primary SMTP domain): Every client I’ve ever worked with leverages autodiscover.and does not rely on
There would need to be an A record for autodiscover which will lead the client to a CAS server. As I mentioned, the issue is that when you attempt External Autodiscover, you get a certificate error and see your Public Website’s Certificate, not the Exchange Certificate. When I am creating a new Outlook Profile, that is one point when Autodiscover will be contacted.
Your public facing website is most likely but the website has been set up to allow for and SSL is activated on https://The Autodiscover service is a mechanism that can do several things.When you first launch your Outlook client (Outlook 2007 or above required for Autodiscover access), it will search Active Directory for a Service Connection Point (SCP) record.https://CASServer/Autodiscover/It is a best practice not to use server FQDNs or Net BIOS names on a cert.So please be sure to update all Internal URLs, External URLs, and the Autodiscover Service Internal URI to use an FQDN other than the server FQDN and other than the Net BIOS names of the servers.