Dovresti avere l'amministratore di Microsoft Exchange Server per abilitare Individuazione automatica in Outlook Web Access per il tempo necessario per autenticare per la prima volta il tuo programma di posta sul tuo iPad. In seguito, l'amministratore può disabilitare il rilevamento automatico se è ritenuto indesiderato.
La documentazione di Apple per la connessione a un Macintosh dice quanto segue. Presumo che lo stesso si applichi alla configurazione dell'app Mail su un iPad.
Connecting to an Exchange Server
To connect a Mac to an Exchange server, you’ll need the following
pieces of information from the server administrator:
The fully qualified domain name for the organization’s Client
Access Server (CAS), typically expressed in the format:
exchange01.example.com.
The Exchange user name, which is generated by the administrator for
each individual user.
The Exchange password, which is also generated for each user. Once
you have the required information, you can either manually configure
your Mac to use Exchange, or configure the Mac using the Exchange
Autodiscover service, if it’s enabled.
Connect to an Exchange server with Autodiscover enabled:
The easiest way to set up Mail, Address Book, and iCal to access
Exchange is the Exchange Autodiscover service. If this feature is
enabled on the Exchange Server, simply open the Add Account pane in
Mail on your Mac and enter your Exchange email address and password.
Mail uses the Autodiscover service in Exchange to obtain the relevant
information and you can start using Exchange services immediately.