Firstly and fore mostly: If you do anything in Exchange: Apply the "cup of coffee rule", never make a change then go and prove that change works straight away! However most of us work in the real world and you have a user who needs to use this mailbox yesterday! Then check the mailbox Exists (See Check for existence of mailbox sections below).1. The Mailbox SHOULD be in the right hand window (Providing you are in the correct administrative group, on the correct server, and in the correct mailbox store! Remember with Exchange 2007 / 2010 you create the mailbox with the Exchange system Manager anyway! Remember, if you are looking at the Global Address List in Outlook then you are NOT looking at the Servers Global Address List*.
If using Outlook, query the GAL directly, or download the latest OAB. Before you do anything send the user you created a 'Test Email' from your own account.
Support for Outlook 2000 was dropped with Exchange 2007, Exchange 2010 only supports Outlook 2003 (post SP2).
Exchange 2013 only supports Outlook 2007 (post SP3 and cumulative update), and Outlook 2010 must be at SP1 with cumulative update. Note: Make sure the Generation Server is set to a server that exists, and it's online.
If you are using Outlook 2003 or 2007 you may be in "Cached Mode", and you are looking at a copy called the "Offline address book" This only gets updated Every 24 hours, and the copy on the server only gets updated every 24 hours at (by default).
In addition to this there a a few methods by which your Outlook clients get the offline address book.*Note: Unless you are NOT in cached mode.
This article shows how to manually update the Global Address List (GAL) in Outlook (version 2010 and above).This reduces the number of times the Outlook window might become unresponsive and the number unnecessary connections to the Microsoft Windows Server Active Directory.Hi guys, Got a strange one, users using the Cached Exchange Mode do not see any new users and have not done for a while. The following information in the GAL isn’t available in the offline address book: Outlook must be able to access Exchange to obtain this information.Therefore, if you are working in Cached Exchange Mode and if you are working online — that is, your connection status is Connected to Microsoft Exchange — Outlook uses both the offline address book and the GAL to provide a complete listing of user information.If you are in Cached Exchange Mode and your connection status is Disconnected, Trying to Connect, or Offline, you can see only the information that is in the offline address book.