Collected Links For Hafnium – March 2021 Exchange Security Issue
The below are a series of links, tips and some very brief thoughts on Hafnium. I will purposefully not include the content of the other locations as it is changing …
Exchange 2016
Out of Band Critical Exchange Security Updates–March 2021
Security updates were released today for Exchange 2010, 2013, 2016 and 2019. Attacks were detected which leveraged these vulnerabilities, so an out of band set of updates was released
This …
Exchange 2016 CU19 Released
Exchange 2016 CU19 has been released to the Microsoft download centre! Exchange 2016 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the Rollup …
Exchange December 2020 Security Updates
Please be aware that Exchange 2013, Exchagne 2016 and Exchange 2019 security updates were released as part of the December 2020 patch Tuesday release. The overall rating is critical, and …
Exchange 2013 OnPremisesSmtpClientSubmission – Unhealthy After Disabling TLS 1.0 and TLS 1.1
After going through the steps to disable TLS 1.0 and TLS 1.1, it was noted that Managed Availability was not happy with one particular component in Exchange 2013. This was …
Exchange Managed Availability Broken With TLS 1.2 Changes
In most enterprise customers there is a segregation of duties between multiple teams. This could be networking and desktop. Or Windows Server platform and messaging. It was the split in …
Exchange Managed Availability Error – OutlookRpcSelfTestProbe
This case illustrates the “fun” with Managed Availability a particular customer had after making changes to their servers. The servers were built back in 2014, and as such the default …
A Tale of Two Certificates–SHA1 Certificate Created During Exchange 2016 Installation
The security space is constantly evolving, and while a lot of the recent work has been on moving to TLS 1.2, a previous focus in the industry was to stop …
Exchange Setup – Certificate Is Expired – Part Deux
Previously I managed to break one of my labs when replicating a customer situation and then had to fix it as noted in this post from 2017.
This time …
Exchange HCW Detects “Wrong” Version
When running Exchange setup or the Exchange Hybrid Configuration Wizard (HCW), I always recommend looking at the version information that is shown on screen. This is part of the gross …