Which serve name I should use for ActiveSync

[guest]

If iPhone Autodiscovery fails, you have to manually enter the information. Your Network Administaror may tell you our Excahnge serve name is mail.yourcompany.local, which is internal server name and not for ActiveSync. This is not what you are looking for. The one you want is the ActiveSync server, for example, “oma.yourcompany.com”.

[guest]

With the FQDN cert configured for either for company.com or for oma.comany.com, i was able to get to the above http: 500, 401 and 1.1. 403 errors. With both certs, the IPhone would not accept my password and kept asking for a correct password over and over. The iPhone configuration had the domain set to oma.company.com and the server was machine.domain.local. I deleted the server and everything went OK, and now I remember that the Foskett article talked about this.