Shulou(Shulou.com)06/02 Report--

1.**CAS (client access server role) * * exchange must be a domain member server

Function: a: a dedicated server role that provides client access connection requests

B: provide meeting information to the client

C: provide automatic discovery service and provide offline mail address book

2.**HUB (Hub Transport Server role) * * exchange must be a domain member server

Function: a: to provide the transmission of mail within the organization

B: application of mail delivery rules

C: application of mail log

D: the mail will be delivered to the user's mailbox

3.**MAILBOX (mailbox database role) * * exchange mandatory role must be a domain member server

Function: a: store user mailbox and shared folder database

B: generate offline address book OAB

C: e-mail address policy and the generation of mail address book

4.UM (Unified messaging server role) is not a required role and must be a domain member server

Function: phone voicemail

5.EDGE (Edge Transport role): non-mandatory role, non-domain member

Function: reduce the scope of the network, anti-virus functions, e-mail transmission rules, spam filtering. * non-essential role

Five major roles: each perform its own duties and effectively disperse the overall load of the system.

Administrative tools: installed by default when installing any server roles

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