Keep it in DNS
I've always thought that the use of the SRV record for identifying your Exchange server should be the FIRST autodiscover check made. Unfortunately there are a lot of ActiveSync clients that seem to be incapable of trying this route.
I've always thought that the use of the SRV record for identifying your Exchange server should be the FIRST autodiscover check made. Unfortunately there are a lot of ActiveSync clients that seem to be incapable of trying this route.