Home > Uncategorized > Auto-mapping in Exchange not working for some users? Map all the users’ DNs in the msExchDelegateListLink attribute

Auto-mapping in Exchange not working for some users? Map all the users’ DNs in the msExchDelegateListLink attribute

Auto-mapping is a feature where an Exchange mailbox that a user has full access permission, will automatically be mapped in any Outlook Profile(s) that they log on to. I ran into it as I was researching why a security group who is granted Full Access permissions wasn’t having it’s members inherited for Full Access.

Auto-mapping worked fine for my user, but didn’t work for several users who had either their mailbox added to the shared mailbox before the 2010 migration [that the company did before my user was created].

So, I set out to find how to actually configure auto-mapping and came across a TechNet article on how to disable it per-user, which lead me to the AD/LDAP object attribute that contains the list of users who should have a given mailbox auto-mapped.

That attribute is msExchDelegateListLink, and it is available on the AD object to be mapped. Access it whatever method you chose, but I used adsiedit.msc. The values should be the distinguished name of the mailbox/user object for the users who will receive the auto-mapping of the object.

Note that when you move the AD object (so that the distinguished name is no longer the same), the msExchDelegateListLink attribute should be updated.

If you remove the DN from the msExchDelegateListLink attribute, it will un-auto-map the mailbox (by this time, you probably just want to remove Full Access permissions, which will remove the DN from the msExchDelegateListLink attribute anyway).

I can’t hear you…

$listofusers = 'user1','user2'
foreach ($user in $listofusers) { $(get-aduser $user).distinguishedname }

Working on editing the AD object attribute to avoid adsiedit.msc.

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