Exchange 2019
Exchange 2016:- Symantec IPS issues
Symantec on a Windows Server just like ESET works great. When you throw Exchange 2016 or Exchange 2019 into the mix, things get more complicated with both products. If you are not aware, when you are running an anti-virus product, you need to add the exclusions for...
Exchange 2013/2019 Coexistence Video series
I have started with a video series show casing how you can run Exchange 2013 and Exchange 2019 in coexistence. There are 18 parts to the video series. This blog will be updated as more parts are created and uploaded. Exchange 2013/2019 Coexistence - Discussion of...
Exchange 2016:- The Server is busy and can’t respond to your request.
In Exchange 2016 OWA, you may have come across a similar window where it states that "Something went wrong" and if you expand more details you can view the Front and Backend servers. Here is a screenshot: You think you have a problem with OWA (Outlook on the Web) in...
Exchange 2019:- Cumulative Update 8 is available.
Microsoft have released the next CU for Exchange 2019 and this is CU8. As with Exchange 2016 CU19, there are a number of vulnerabilities and exposures fixed in CU8. It also includes nonsecurity issues that have also been fixed. Here is the link to the full article:...
Exchange 2016:- Modify the OWA login page
As an Exchange Admin or IT Admin, you are familiar with the OWA (Outlook on the Web) login page: You can change text on this page and in this article, I want to show you where you can modify the text next to where it says "sign in". First of all, you need to head over...
Exchange 2016/2019 – Upgrade your systems to ensure your security.
Upgrading Exchange servers should be nothing new to Admins however a lot of Admins prefer not to as they say "why fix something that is not broken?". With the increase attacks on Exchange 2016 and 2019, the latest Cumulative Updates (CU) CU15 for Exchange 2016 and...
Active Directory ZeroLogon Exploit
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...
Exchange 2016/2019:- Flighting is not enabled for domain..oauth_not_available
The error in the description - "Flighting is not enabled for domain [email protected]_not_available" has been happening quiet often. Right, so there are two scenarios where this can happen that I have encountered: Hybrid Exchange (AD Connect - Azure) No Hybrid...
Exchange 2019 CU7: One of the quickest installs.
I have done so many Exchange installs in the past 16+ years and I have never seen an installation go as quick as CU7 for Exchange 2019. In unattended mode of the installation, normally you have to wait in the section "Copying Exchange Files" and 16% seems to just stay...
Exchange/Active Directory – all versions: Why you should have strong passwords.
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...