[ Exchange 2010 SP1 ][ WebsitePanel ] OAB Downloads not working for some Address Lists


  • So we're trying to run a greenfield scale-out hosted Exchange 2010 SP1 setup to cater to as many companies/customers as we can using:
    "Exchange 2010 SP1 + WebsitePanel v1.2 + GAL AD segregation"
    (We tested the Exchange 2010 SP1 /hosting switch first and decided that we needed more functionality so here we are. Please be gentle.)

    We segregated the Global Address List (GAL) into sub-sets of Organization Units (OU) that have their own Address List... and do not get to read the contents of other Address Lists nor the GAL super-set.
    (e.g. OU=Tofu would effectively have the \Tofu Address List which only contains users/mailboxes under that OU.)

    The WebsitePanel hosting panel helps us subscribe users/mailboxes to their respective Address List and the Address Book by using Custom Attributes.

    All our customers use either Outlook 2007/2010 via Outlook Anywhere (formerly known as RPC-over-HTTP) to download the Address Book from the Exchange 2010 SP1 setup. Autodiscover *seems* to be working for all our customers, because we've required them to create the CNAME records "" to point to our Client Access Servers... and well, they haven't been asking for Manually Configure step-by-step instructions.

    What's unusual is the Download Address Book (OAB) feature isn't working for users of *some* of the Address Lists.
    Worse, Outlook 2007/2010 users trying to download these Address Lists get repeatedly asked for their email credentials, despite entering valid ones.
    When the user clicks Cancel instead of entering the password, Outlook doesn't seem affected... its just that the Address Book doesn't get downloaded.

    [Scope] So far we've verified that this issue applies to...
    1. [Object-level] Mailboxes/profiles under those OUs that are at least 24 hours old. 
    ( GAL by default refreshes every 24 hours, so Outlook won't find any newer mailboxes )
    2. [Application-level] Outlook 2007 and 2010 both 64bit and 32bit.
    3. [Infrastructure-level] This issue applies on Windows 7 64bit and 32bit laptops and freshly spun-up virtual machines (Hyper-V on Windows 2008 R2, Virtual Box on xubuntu 11.10)

    So here we are wondering which configuration gotchas we fell into.

    Any pointers or outright solutions (that won't involve calling for Premium Support) would be awesome.
    Thursday, March 01, 2012 3:01 PM

All replies