Author Archives: feadmin

Attribute-Based Active Directory Group Membership

Unfortunately Active Directory doesn’t yet provide dynamic security groups in the way that, for example, Exchange provides dynamic distribution groups.  Sometimes it is useful to maintain a group’s membership based on a specific attribute, or set of attributes.  Here’s a quick Powershell example that shows how to maintain the membership based on the presence of… Read More »

Power to the people!

You now have the ability to provide product feature requests and changes relating to Windows Server that go direct to the Product Group.  Not only that, but you can build a base of voter support to drive your suggestions across the line. windowsserver.uservoice.com I really like this concept as it removes the difficulties associated with getting your… Read More »

EOP Accepted Domain silently modified

It seems that a couple of weeks ago my standalone Exchange Online Protection (EOP) configuration was changed without me being involved. Basically, it looks like my default Accepted Domain was changed from type “Internal Relay” to “Authoritative” without my knowledge or consent. The first I knew of this was when I noticed my on-premises mail… Read More »

Dump a list of all schemaIDGUIDs with Powershell

There are well known methods for setting Access Control Entries (ACEs) on Active Directory objects using Powershell. One example is the following:   http://blogs.msdn.com/b/adpowershell/archive/2009/10/13/add-object-specific-aces-using-active-directory-powershell.aspx   The method relies on you knowing the schemaIDGUID of the schema object classes you are working with (e.g. User, Computer, Group). Unless you know your way around AD it’s not… Read More »

MSExchange Mailbox Replication Error 1121

I recently had a interesting issue where I was seeing the 1121 error below in the Application log on one of my Exchange 2013 servers every minute.   Log Name: Application Source: MSExchange Mailbox Replication Date: 14/01/2015 2:23:34 p.m. Event ID: 1121 Task Category: Request Level: Error Keywords: Classic User: N/A Computer: ex1.contoso.com Description: The… Read More »

[ERROR] Could not find the Exchange Mailbox Administrators Universal Security Group through its well-known GUID

I came across a weird error the other day while running Exchange Server 2013 CU6 setup with the /PrepareAD switch.  The error (from the Exchange setup logs) was this: [12/02/2014 01:14:16.0727] [2] [ERROR] Could not find the Exchange Mailbox Administrators Universal Security Group through its well-known GUID 29a962c2-91d6-4ab7-9e06-8728f8f842ea.  Please make sure that Setup /prepareAD has… Read More »