Over the past three parts we have covered connecting to Exchange and discovering cmdlets in part 1. We explored the pipeline in part 2 followed by hash tables, arrays and variables in part 3. This week we’re covering flow control in terms of conditional and iterative processing. We covered where (?) and foreach (%) as […]
Exchange PowerShell Quickstart – Part 3
Over the past two weeks we have covered connecting to Exchange and discovering cmdlets in part 1, and we explored the pipeline in part 2. This week we will be talking about hash tables, arrays and variables. Hash Tables The easiest way to picture a hash table is a list of attributes and their respective […]
Exchange PowerShell Quickstart – Part 2
Last week in part 1 we looked at the background on PowerShell, explored terminology and some basic commands. This week we are going to see how we combine commands together on the command line via ‘the pipeline’ The Pipeline The pipeline is just a single line of PowerShell with one or more | (pipe character) […]
Exchange PowerShell Quickstart – Part 1
Background As we know Microsoft is firmly banking on PowerShell to be THE way to manage all of their operating systems and services, and with good reason. PowerShell is the most powerful method Microsoft has developed to manage their products. The concepts are similar to Unix style shells but it is a little more easily […]
Cross forest in Exchange
How to open a mailbox cross forest in Exchange We often migrate users between Exchange organisations/forests, or need to add coexistence between two or more Exchange organisations and forests. The basic set up for coexistence includes the following: Network coexistence DNS coexistence AD Trust Autodiscover coexistence Synchronisation of GAL objects Accepted Domains Remote Domains Mail […]
Factors affecting Migration velocity
After a lot of experience in the field I’ve tried to bring together a bunch of items to consider when embarking on a Microsoft transformation. This blog is really directed at the Migration side of such a project, however many items are shared with coexistence. The list may seem quite large, but in actual […]
Exchange Cascaded Folder Permission
If you have ever done delegation in Lotus Notes and were then migrated to Outlook you would have noticed one big difference… cascaded permissions!!! We have asked Microsoft why Outlook permissions behave so differently to NTLM permissions but we haven’t had an answer. At the recent MEC a number of people were asking the same […]
Restoring a Disconnected Mailbox
in Exchange I came across an issue at a client where for reasons as yet unknown about 15 users across various servers/databases in a single DAG suddenly had their mailboxes disconnected and a new one created. Now the mailboxes had different GUIDs of course, but they had the same LegacyExchangeDN and the users were now […]
Exchange Copy-MailboxFolderPermission
Are you sometimes asked by VIPs to get Folder Permissions sorted out in Outlook when they get a replacement PA? Of course this can be done by the VIP themselves, but what if they have > 100 folders? Outlook permissions don’t inherit down, so it isn’t enough to just set the permission at the top […]
Exchange Replication over a Split Network
Let’s start off by explaining what I mean by Exchange replication over a split network. I am talking about a DAG split over two Data Centres (and AD Sites) with separate links for replication and for user/MAPI traffic. Although let’s also quickly add that Microsoft now recommends that you only do this when you have […]
Active Directory Authentication – Part 2
In part 1, we talked about authentication via NTLM and how the domain controllers that are used to authenticate you are the ones near the service that is being consumed. Now let us move onto Kerberos. Just like last time I need to point at a TechNet Article, How DNS Support for Active Directory Works. […]
Active Directory Authentication – Part 1
Today we are deviating away from the more Messaging related threads and we will be looking at authentication. The reason for writing this article is that I am often asked to troubleshoot authentication issues and to my surprise there are not many simple explanations about how authentication works. Also I find time and again that […]