by edward | Dec 25, 2023 | Exchange 2013
If you are still running Exchange 2013, don’t neglect your patching. I had not updated my lab servers in two (2) years and updated to the latest Cumulative Update (CU) and Security Update (SU) that is available. Patching ensures that you are secure with what has...
by edward | Dec 24, 2023 | Exchange 2016, Exchange 2019
In one of my lab servers, I was busy working on a project and email would just not send. I kept on getting the error below from the consoles output: Error with SMTP server… (451, b’4.7.0 Temporary server error. Please try again later. PRX2′) This...
by edward | Dec 23, 2023 | Exchange 2016, Exchange 2019, Google Captcha
In one of my recent blog posts, we covered brute forcing of the OWA page in Exchange 2019, this also applies to Exchange 2016 and Exchange 2013. If an attacker successfully gains access, they might access an account that has elevated privileges or given enough time,...
by edward | Dec 21, 2023 | PowerShell, SharpKiller, Windows Defender
I am constantly testing defender and other Anti-Virus products on what they detect and came across this nice tool called SharpKiller. Here is the link to the GitHub Repository where you can read all about it: https://wwwgithub.com/S1lkys/SharpKiller Windows Defender...
by edward | Dec 13, 2023 | Exchange 2019, PowerShell
If you are an Exchange Admin, you may have inherited Exchange Servers and are not sure what version you are running or you are simply managing Exchange but need to check Control Panel for installed updates to see what version you are on. If you have a few hundred or...
