As an IT Admin, mailbox migrations are a constant thing. Moving users to new databases because you have a new database or you trying clean up and old one with…
In the August 2023 Security update (SU) for Exchange Server 2016 and Exchange Server 2019, there was a work around that had to be put in place to remove the…
Sometimes the event logs on Exchange servers throw up errors or warnings that do not appear again. The event ID, 4002 for MSExchange Availability is a broad error/warning/informational alert. Looking…
As everything relies heavily on DNS and the ability to resolve names to IP’s etc., if your DNS upstream is not working or something firewall/internally is not working, things do…
In one of my lab machines I was sifting through the log files and came across Event ID 12000 as shown below. As this lab machine does not have internet…
In my blog post yesterday where I show cased that a bad actor can get the Exchange Server version with CU/SU you are running and based on that information if…
Over the past few years, Microsoft Exchange Server has come under heavy attack and with each new Cumulative Update (CU) and Security Update (SU), CVE’s are addressed and closed. The…
Microsoft released V2 of the August Security Update for Exchange 2019 which includes an extra step that addresses a vulnerability. In this blog post, we will cover the following: Exchange…
We all know about the ongoing attacks on Exchange Servers and it is vitally important that you keep up-to-date with patching of your environments, even if it is standalone servers…
I was testing the Invoke-Mimikatz script on my Windows 2016 Server and while it is straight forward to bypass Windows Defender, I thought of taking the challenge and seeing if…