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Practical 365

Separating users in Office 365 using Address Book Policies

January 5, 2022 by Sean McAvinue 3 Comments

Microsoft 365 has many built-in controls to manage how users communicate externally, however, these controls do not generally extend to internal communication. While this is fine in most environments, situations exist where a degree of separation is required to segregate communication across different groups of users. This article details the configuration of Address Book Policies, and how they can be extended to include Teams.

Blog, Exchange Online, Microsoft 365, PowerShell Address Book Policies, GAL, Information Barriers, OAB

Exchange Recipient Not Appearing in the Offline Address Book

September 16, 2013 by Paul Cunningham 10 Comments

recipient not appearing in oab

How to diagnose an issue in which an Exchange recipient that is visible in the GAL may not appear in the offline address book.

Exchange Server Diagnostic Logging, Exchange 2007, Exchange 2010, Exchange 2013, GAL, Global Address List, OAB, Offline Address Book

How to Send As a Hidden Mailbox

July 17, 2013 by Paul Cunningham 22 Comments

exchange send as hidden mailbox

Some end users in your Exchange Server environment may have a requirement to “send as” a mailbox that they also need to remain hidden from the global address list.

Exchange Server Exchange 2010, Exchange 2013, GAL, Global Address List, OAB, Offline Address Book, Outlook, Send As

Resolving Anonymous Mail to the GAL with Exchange Server 2010

April 13, 2011 by Paul Cunningham 19 Comments

exchange  resolve anonymous email

You may encounter an issue where the emails that end users receive show the SMTP address of the sender instead of the more friendly display name configured on the user mailbox that has that SMTP address.

Exchange Server Exchange 2010, GAL, Hub Transport, Receive Connectors, Relay, SMTP

How to Remove Mail Users from the Global Address List

July 27, 2010 by Paul Cunningham 49 Comments

In this tutorial I show you how to use recipient filters to exclude Mail User objects from a Global Address List.

Exchange Server Exchange 2010, Exchange Management Shell, GAL, PowerShell

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