I was asked to convert a mailbox to a mailuser, and funny enough although the reverse is true, you can’t just call enable-mailuser on a mailbox… Of course you can disable-mailbox and then enable-mailuser but that removes all Exchange related attributes, which isn’t really that desirable. To overcome this I wrote a small script that […]
Deleting Folders
from an Exchange Mailbox with PowerShell I was given an escalation at a client where somehow a user managed to create thousands of folders all nested one inside the other. So the task was how to delete these folders. User and 1/2/3rd line support had already tried using Outlook, OWA and MFCMapi but none of […]
Sending TLS mail to Exchange from the command line
Before we look at sending TLS mail to Exchange, let’s talk about using a command line to send mail without TLS. The command you use to send plain email to Exchange is the telnet client. It is no longer installed by default but you can install it by adding the Windows Feature for telnet client. Once […]
Demystifying AD Schema Extensions for Exchange
Now most people who have been around Active Directory (AD) will understand about the AD schema and that some applications like Exchange, Lync, etc make updates to this schema. However not everyone is intimately familiar with AD, so let’s start at the beginning… Active Directory 101 Microsoft introduced Active Directory back in the Windows 2000 […]
Microsoft Ignite 2015
Back from Microsoft Ignite, great conference but to be honest it was a bit too big really. 25,000 attendees and the venue was enormous! The food was pretty dire, there were long queues for transportation and the hotels were a long way from the venue. All in all it was a very tiring week and […]
Setting up a new Office 365 Tenant
Setting up a new Office 365 tenant may seem daunting, but actually it is a pretty simple process. In this blog we will take you through step-by-step from going to http://www.office365.com through to having a tenant fully functional. Step 1: Go to http://www.office365.com Step 2: Click Home or Business In our case we’re chosing Business […]
The Shared Mailbox Dilemma
The Shared Mailbox Dilemma Microsoft Teams (and Office 365 Groups) whilst having gained serious traction, and by serious – Teams has become Microsoft’s fastest growing App in their history. Shared Mailboxes still have a place in our heart and in the organisation for now, but inevitably they will perhaps fade away, maybe even email will […]
Design for an enterprise scale Exchange 2013 OAB
Today we will be discussing how to design your Exchange 2013 Offline Address Book (OAB) for an enterprise scale client. By enterprise scale client we mean a client with thousands of mailboxes spread over multiple Active Directory sites. See our previous post “Exchange Global Address List and the Outlook Offline Address Book” to clear up any […]
Least access model
for Lotus Notes to Exchange data migrations In many organisations to achieve accessing mail data for a migration you add the Lotus Notes Migration ID to the administrators group of the domain(s). However, when requesting 3rd party trusted migration experts like Nero Blanco to perform the migration, you may not like the exposure to data […]
Exchange Global Address List and the Outlook Offline Address Book
Introduction This document seeks to address and clarify the small misunderstanding surrounding the GAL (Global Address List) and the OAB (Offline Address Book). Quite often all Administrators, even Exchange Administrators simply refer to the users they see in the Address section of Outlook casually as the GAL for ease of reference, but really more […]
Domino Routing Rules – Binary Tree Coexistence Solutions
Exchange to Domino Routing Rules specifically relating to Binary Tree Coexistence Solutions Introduction This document seeks to identify the potential pitfalls of Inbound SMTP routing to Domino in a Coexistence environment, particularly when using a static targetAddress that is built by a Directory Synchronisation solution. Routing from Exchange/Office 365 to Domino In a Binary Tree […]
OABGen encountered file error ffffffff
The problem started with users reporting that their Offline Address Book (OAB) was missing some recent new starters, actually they said Global Address List (GAL) but that misconception is another story for another day. Upon investigation it seemed that the issue was a global issue. So where to start… I first thought right let’s think through […]