On any Exchange server in the organization, open Exchange System Manager (Start,
All Programs, Microsoft Exchange, System Manager).
2. Navigate to Global Settings, Mobile Services.
3. Right-click on Mobile Services and choose Properties.
4. Check the boxes for ActiveSync and OMA, as shown in Figure 13.1. Enable partial or
full access to the services by checking some or all of these check boxes. Click the
Help (question mark) for more info on the options.
5. Click OK to save the changes.
Enabling or Disabling OMA and EAS on a Per-Mailbox Basis By default, all mailbox-enabled
users in an Exchange organization have OMA and EAS individually enabled. If OMA and
EAS access needs to be disabled for an individual user, or to verify that it is indeed enabled
FIGURE 13.1 Enabling OMA and EAS in an Exchange 2003 organization.
349 Configuring ISA Server 2006 to Support OMA and ActiveSync Access to Exchange
for that user, the individual setting can be found on the Exchange Features tab of an individual
user account in Active Directory, as shown in Figure 13.2.
Supporting OMA and ActiveSync on an OWA Server Configured as a Back-End Mailbox
Server One of the most misunderstood and confusing topics with OMA and EAS has to
do with how to enable mobile services on an Exchange OWA server that operates both as
an Exchange SSL-enabled OWA server and an Exchange mailbox server.
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