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Attributes for Exchange 5.5 Mailboxes :  Unauth-Orig

This attribute is an array of distinguished names which specifies the potential senders in our organisation that are not allowed to send mail to this mailbox.


LDAP name Unauth-Orig
Data type Distinguished name of another object
Multivalue (Array) Yes
Heuristic 20 => Replicated between sites, no operational attribute
Access category

Admin access only

Ex55 Database name Unauth-Orig

The DN entries in this array can be distribution lists or external custom recipients also. However, it is not allowed to fill in just a simple SMTP address in here - all entries have to be real distinguished names of objects from our own Exchange organisation.

If the attribute Unauth-Orig doesn't exists or if the list is empty, then mail can be received from all possible senders. There is also an attribute for a positive list according to recipient limitations: Auth-Orig.

When changing this attribute, the Exchange system will automatically create an according backlink attribute for the particular object that was entered here (in Unauth-Orig-BL). So you can check this backlink attribute of your mailbox to check if it is limited to send mail to another mailbox in the organization.