April 2021 Exchange Security Updates
Today is patch Tuesday for April 2021 and there are critical Exchange server security updates in the release. You can review all of the affected products on the MSRC blog…
Exchange 2019
Exchange & TCP/IP Port Range
The below is an interesting result after installing Exchange. The act of installing Exchange will change how TCP/IP operates on the server with respect to ephemeral connections.
This may manifest …
Exchange Setup Fails – Error 3221685616
The saying goes that nothing monitors AD better than Exchange. While the symptom is an Exchange issue, the underlying root cause is typically something else. Though as an added "feature" …
QuickTip – Query Block Mode
Exchange 2010 SP1 introduced the concept of block mode or granular replication. This minimised the time taken for transactions on the active node to be replicated to passive nodes. Since …
Exchange 2019 CU9 Released
Exchange 2019 CU9 has been released to the Microsoft Volume Licensing Center! Exchange 2019 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the …
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 …
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 2019 CU8 Released
Exchange 2019 CU8 has been released to the Microsoft Volume Licensing Center! Exchange 2019 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the …
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 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 …