You can configure Microsoft Intune to block devices that do not comply with a “standard” access to Office 365 Exchange Online email.

Here is how:

  1. in a silverlight browser.
  2. Create a Compliance Policy
  3. Policy->Compliance Policy->Create New
compliance policy
I will demand a password of minimum 6 digits and 1 minutes before screenlock.
Setting the Conditional Access and blocking Exchange Active Sync
  1. Policy->Conditional Acces->Exchange Online Policy
  2. Click following:
    • Activate Policy for Conditional Access
    • Select Specific Platforms
    • Check iOS (my rules will now only apply here, rest can read email.
    • Check: Require Compliance for Mobile Device
    • Select “Block access to e-mail for devices not supported by Intune”
    • Select “All users”
    • Select “No exception users”

The iOS users will now have to enroll in order to read email and when they do they need to set a 6 digit password.

Caution with using Active Sync only:

  1. If the user has allready configured email, he might not be blocked.
  2. If the user has been associated with that device earlier, he might not be blocked.

Enrollment procedure:

  1. Enter Your email in the native mail client by going to settings
  2. You recive an email with instructions on how to get access to your mail.
Follow that instruction.