Multiple Global Address List ( GAL ) in Exchange 2007

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Apr 5, 2008, 2:48:47 PM4/5/08

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Exchange Management Console (EMC) doesn't allow you to create more than one GAL but PowerShell gives you that functionality.

Before you start you should have Exchange Organization Administrators role in your organization since this is organizational level changes.

Microsoft gives the theoretical limit about number of GAL/Address List in organization is 1300 but I feel nobody would have tired that.

Take a look at Address Lists before creating New GAL in my testing environment.

Now lets see mailboxes list.

Here mailboxes has postfix 1 they are in company named 'Company 1' and mailboxes has postfix 2 they are in 'Company 2'.

Now lets see the syntax for creating New GAL

New-GlobalAddressList -Name <String> -IncludedRecipients <Nullable> -ConditionalCompany <String>

Example to create a GAL:

New-GlobalAddressList -Name "Company 1" -ConditionalCompany "Company 1" -IncludedRecipients "AllRecipients"

This will create 'Company 1' GAL which includes all type of recipients.

Here is the new GAL available in Address List and in OWA with all the recipients.

· Here we created the GAL based on Active Directory attribute named Company, in the same way we can create based on below different attributes.

     Company
     CustomAttribute1 - CustomAttribute15
     Department
     StateOrProvince

· Switch -IncludedRecipients can have below different values as per your requirement.

     MailboxUsers
     Resources
     Mailcontacts
     MailGroups
     MailUsers
     AllRecipients

Regards,

Amit Tank, MCTS: Exchange 2007, MCSA 2003 - Messaging

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