WARNING: GeneratingMailbox is null; this OAB will not be generated until GeneratingMailbox is set to an arbitration mailbox with OABGen capability.

WARNING: GeneratingMailbox is null; this OAB will not be generated until GeneratingMailbox is set to an arbitration mailbox with OABGen capability.

The above error is may be common to you or you may have seen that creating offline address book but if notice it says address list already matching the identity “Marketing” where I’m trying to add marketing to the new OAB, so what is going wrong here?

When I looked up the newly created Address List (as mentioned above) and the GAL , I found out that GAL is also named as Marketing, see below

As soon as I renamed it

I’m able to create a new OAB

Exchange 2013 Address Book Policies – ABP

What is Address Book Policy

IT Allows

•User segmentation into specific groups

•Simple mechanism to accomplish  GAL Seg.

•Customize GAL in Outlook and OWA

ABP is a multi-step process

Proper planning is required

ABP – is  Only configued via Shell

ABP Ingredients

•ABP NAME

•GAL

•OAB

•Room list

•Address list   –   all mandatory

ABP Benefits

•ABP NAME

•GAL

•OAB

•Room list

•Address list   –   all mandatory

 

Before ABP – A Typical mailbox

 

A mailbox after applying the ABP

user mailbox is only limited to see the address list and room mailbox specific to his department.

 

Address Book Policy – when created

 

Address Book Policy – when applied to a mailbox