Provisioning accounts in Active Directory and Exchange is not a new task for Admins. However when you provision something and it does not want to work is where the troubleshooting starts. You may have come across an error like the following: The error itself is a bit deceiving as it Read more…
In my Exchange 2010 lab, I came across a handful of messages in the submission queue. All of them were for accepted and declined meeting invites and nothing else and all of them for journaling only. Here is the error that was in the queue viewer: Last Error: 400 4.4.7 Read more…
With the latest set of attacks on Exchange, many admins are scrambling to update their Exchange servers. If you coming from a CU that lower than CU13, you need to take note of the requirements before attempting the upgrade: Install .NET 4.8 on your Exchange 2016 server Install the new Read more…
A few months ago a zerologon exploit was released and this exploit was able to do damage to an Active Directory environment. Microsoft released a patch in the next set of updates and in a 2x part video, we show you how an unpatched system is compromised vs a patched Read more…
As the process begins in removing Exchange 2010 from an environment, you might run into an issue where the server has Offline Address Books on it even though everything else has been moved off. The error you see below is quickly resolved by moving the Offline Address Books to another Read more…
Weak passwords is a common mistake with many email users or even admins that manage domains. I recently had the opportunity to demo the zerologon exploit and how it breaks your domain controllers in your environment. This means that Exchange will be broken as well. I am referring to CVE-2020-1472 Read more…
As you know, October 13 2020 is approaching fast and the support for Exchange 2010 is ending. For those who are still on legacy, remember Windows 2008 R2 is not getting many or any updates anymore so you at a risk with that operating system. If you want to move Read more…
For those of you still managing an Exchange 2010 environment, you might come across the error listed below. If you head over to the Exchange Management Console (EMC), you will notice it says the server is licensed. So why are we getting this error? When you license a server, it Read more…
In Exchange 2010/2016, you might come across a strange error as shown below when sending email: Failed to process message due to a permanent exception with message Invalid named property Solution: To fix this problem, you need to move the mailbox to another store with a specific switch: New-MoveRequest “User” Read more…
After rebooting a server we found the following error in the event logs along with whole stack of others: Right, so the Microsoft Exchange RPC Client Access would not start. To fix this error, you can do the following: Locate the Remote Procedure call (RPC) Locator service and set it Read more…