Decommissioning Exchange 2016 Server

26th of June, 2017 / / 2 Comments

I have created many labs over the years and never really spent the time to decommission my environment, I usually just blow it away and start again.
So I finally decided to go through the process and decommission my Exchange 2016 server in my lab environment.
My lab consisted of the following:

  • Domain Controller (Windows Server 2012 R2)
  • AAD Connect Server
  • Exchange 2016 Server/ Office 365 Hybrid
  • Office 365 tenant

Being a lab I only had one Exchange server which had the mailbox role configured and was also my hybrid server.… [Keep reading] “Decommissioning Exchange 2016 Server”

DKIM for Custom Domain in Office 365

14th of June, 2017 / / No Comments

 
As Office 365 service keeps adding new features and functions, it is important for global admins to keep up with the latest offerings and service enhancements office 365 provides. In this blog post I am going to discuss one of the security feature offered by office 365 and how it can be beneficial to organizations when it comes to securing their office365 tenants. This feature is called DKIM. DKIM has been offered by Microsoft for some time now and most of the organizations are using it quite effectively.… [Keep reading] “DKIM for Custom Domain in Office 365”

Exchange 2010 Hybrid Auto Mapping Shared Mailboxes

30th of May, 2017 / / 2 Comments

Migrating shared mailboxes to Office 365 is one of those things that is starting to become easier over time, especially with full access permissions now working cross premises.
One little discovery that I thought I would share is that if you have an Exchange 2010 hybrid configuration, the auto mapping feature will not work cross premises. (Exchange 2013 and above, you are ok and have nothing to worry about).
This means if an on-premises user has access to a shared mailbox that you migrate to Office 365, it will disappear from their Outlook even though they still have full access.… [Keep reading] “Exchange 2010 Hybrid Auto Mapping Shared Mailboxes”

Try/Catch works in PowerShell ISE and not in PowerShell console

30th of May, 2017 / / No Comments

I recently encountered an issue with one of my PowerShell scripts. It was a script to enable litigation hold on all mailboxes in Exchange Online.
I connected to Exchange Online via the usual means below.

$creds = Get-Credential
$session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $Creds -Authentication Basic -AllowRedirection
Import-PSSession $session -AllowClobber

I then attempted to execute the following with no success.

try
{
Set-Mailbox -Identity $user.UserPrincipalName -LitigationHoldEnabled $true -ErrorAction Stop
}
catch
{
Write-Host "ERROR!"
… [Keep reading] “Try/Catch works in PowerShell ISE and not in PowerShell console”

Synchronizing Exchange Online/Office 365 User Profile Photos with FIM/MIM

23rd of May, 2017 / / No Comments

Introduction

This is Part Two in the two-part blog post on managing users profile photos with Microsoft FIM/MIM. Part one here detailed managing users Azure AD/Active Directory profile photo. This post delves deeper into photos, specifically around Office 365 and the reason why you may want to manage these via FIM/MIM.

Background

User profile photos should be simple to manage. But in a rapidly moving hybrid cloud world it can be a lot more complex than it needs to be.… [Keep reading] “Synchronizing Exchange Online/Office 365 User Profile Photos with FIM/MIM”

Understanding Password Sync and Write-back

15th of May, 2017 / / 5 Comments

For anyone who has worked with Office 365/Azure AD and AADConnect, you will of course be aware that we can now sync passwords two ways from Azure AD to our on-premises AD. This is obviously a very handy thing to do for myriad reasons, and an obvious suggestion for a business intending to utilise Office 365. The conversation with the security bod however, might be a different kettle of fish. In this post, I aim to explain how the password sync and write-back features work, and hopefully arm you with enough information to have that chat with the security guys.… [Keep reading] “Understanding Password Sync and Write-back”

Azure AD Connect – Upgrade Errors

16th of March, 2017 / / No Comments

 
 
Azure AD Connect is the latest release to date for Azure AD sync or previously known as Dirsync service. It comes with some new features which make it even more efficient and useful in Hybrid environment. Besides many new features the primary purpose of this application remains the same i.e. to sync identities from your local (On-Prem) AD to Azure AD.
Of the late I upgraded an AD sync service to AD connect and during the install process I ran into a few issues which I felt are not widely discussed or posted on the web but yet are real world scenarios which people can face during AD connect Install and configuration.… [Keep reading] “Azure AD Connect – Upgrade Errors”

It's time to get your head out of the clouds!

27th of February, 2017 / / No Comments

head-in-the-clouds1
For those of you who know me, you are probably thinking “Why on earth would we be wanting to get our heads out of the “Cloud” when all you’ve been telling me for years now is the need to adopt cloud!
This is true for the most part, but my point here is many businesses are being flooded by service providers in every direction to adopt or subscribe to their “cloud” based offering, furthermore ICT budgets are being squeezed forcing organisations into SaaS applications.… [Keep reading] “It's time to get your head out of the clouds!”

Send mail to Office 365 via an Exchange Server hosted in Azure

24th of February, 2017 / / No Comments

Those of you who have attempted to send mail to Office 365 from Azure know that sending outbound mail directly from an email server hosted in Azure is not supported due to elastic nature of public cloud service IPs and the potential for abuse. Therefore, the Azure IP address blocks are added to public block lists with no exceptions to this policy.
To be able to send mail from an Azure hosted email server to Office 365 you to need to send mail via a SMTP relay.… [Keep reading] “Send mail to Office 365 via an Exchange Server hosted in Azure”

Free/busy Exchange hybrid troubleshooting with Microsoft Edge

24th of February, 2017 / / 1 Comment

Those of you who have configured Exchange hybrid with Office 365 before know that free/busy functionality can be troublesome at times and not work correctly.
Instead of searching through Exchange logs I found that you can pin point the exact error message through Microsoft Edge to assist with troubleshooting.
To do so;

  1. Open Microsoft Edge and login to Office 365 OWA (https://outlook.office365.com/owa) with an Office 365 account
  2. Create a new meeting request
  3. Press F12 to launch developer tools
  4. Conduct a free/busy lookup on a person with a mailbox on-premises
  5. Select the Network tab
  6. Select the entry with “GetUserAvailability”devtools-getuseravailability
  7. Select the body tab (on the right hand side)
  8. The MessageText element will display the exact error messagedevtools-messagetext