ÿWPCL ûÿ2BJ|xÐ ` ÐÐÌÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿàÀ @ øÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÌÐÐ °°°è ÐÑ c܈4 PŽÂ ÑÐ Å°6Ø'°6Ø'Å ÐSection Five © Use of the Directory 20.ÁÀÁOverview Ð à ÐThis section describes the uses to which the MHS may put the Directory if it is present. If the Directory is unavailable to the MHS, how, if at all, the MHS performs these same tasks is a local matter. This section covers the following topics: a)ÁàÁAuthentication b)ÁàÁName resolution c)ÁàÁDL expansion d)ÁàÁCapability assessment 21.ÁÀÁAuthentication A functional object may accomplish authentication using information stored in the Directory. 22.ÁÀÁName Resolution A functional object may accomplish name resolution using the Directory. To obtain the O/R address(es) of a user or DL whose Directory name it possesses, an object presents that name to the Directory and requests from the object's Directory entry the following attributes: a)ÁàÁMHS O/R Addresses b)ÁàÁMHS Preferred Delivery Methods To do this successfully, the object must first authenticate itself to the Directory and have access rights to the information requested. 23.ÁÀÁDL Expansion A functional object may accomplish DL expansion using the Directory, first verifying that the necessary submit permissions exist. To obtain the members of a DL whose Directory name it possesses, the object presents that name to the Directory and requests from the object's Directory entry the following attributes: a)ÁàÁMHS DL Members b)ÁàÁMHS DL Submit Permissions c)ÁàÁMHS Preferred Delivery Methods To do this successfully, the MTA must first authenticate itself to the Directory and have access rights to the information requested. 24.ÁÀÁCapability Assessment A functional object may assess the capabilities of a user or MS using the Directory. The following Directory attributes represent user capabilities of possible significance in Message Handling: a)ÁàÁMHS Deliverable Content Length b)ÁàÁMHS Deliverable Content Types c)ÁàÁMHS Deliverable EITs d)ÁàÁMHS Preferred Delivery Methods The following Directory attributes represent MS capabilities of possible significance in Message Handling: a)ÁàÁMHS Supported Automatic Actions b)ÁàÁMHS Supported Content Types c)ÁàÁMHS Supported Optional Attributes To assess a particular capability of a user or MS whose Directory name it possesses, the object presents that name to the Directory and requests from the object's Directory entry the attribute associated with that capability. To do this successfully, the MTA must first authenticate itself to the Directory and have access rights to the information requested.