Global verses Universal Active Directory Groups for guaranteed Email Delivery
When it comes to Distribution Lists, it is to my understanding that email delivery is guaranteed when selecting the "Universal" option over "Global" even in a single forest, single domain environment. The same would also apply to the security group that you create if it is required for more than one person to have the ability to Manage the members list of the Distribution List. Is this true? If so what is the Microsoft Technical explanation as to why this is the case? Thank you.
December 25th, 2010 4:53pm

see if this helps your understanding http://theessentialexchange.com/blogs/michael/archive/2008/02/28/exchange-server-2007-and-universal-groups.aspx also "Only universal group memberships are replicated across all domains to all global catalog servers in the forest. Microsoft always recommends using universal distribution groups for mail distribution in a multi-domain environment" here is some more information --> http://technet.microsoft.com/en-us/library/bb124513.aspx "You can create or mail-enable only universal distribution groups. To convert a domain-local or a global group to a universal group, you can use the Set-Group cmdlet in the Exchange Management Shell. You may have mail-enabled groups that were migrated from previous versions of Exchange that are not universal groups. You can use the Exchange Management Console (EMC) or the Shell to manage these groups "MCSE | MCITP - Server 2008 | MCITP - Exchange 2007 | MCTS - Exchange 2010
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December 26th, 2010 2:43am

Hi, Please check it: http://support.microsoft.com/kb/839949 Thanks AllenAllen Song
December 27th, 2010 4:29am

Thanks for the help, really appreciate it. In a situation where I created a Universal Distribution List (running Active Directory on Win 2008 Server and Exchange Server 2003) and need to allow more than one person to Manage the List in order to update members in the list, it seems that a Universal Security Group works over a Global Security Group and the users I am allowing to Manage the List are all in one Domain. Is this because my DL is set up as "Universal Distribution" instead of "Global Distribution"? Is there a Microsoft Article that talks about this specifically? Thanks again for the help.
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December 31st, 2010 4:40pm

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