Microsoft Exchange and Active Directory Blog
Today, mainstream support for Exchange Server 2019 has expired, so both Exchange Server versions that are still supported are now in extended support, which ends on October 14, 2025. While Exchange 2016 will only receive security updates, Exchange 2019 will receive two more CUs. The CU14 for Exchange 2019 will be released soon and CU15 will also be ... Read more
Microsoft has announced that Exchange 2019 CU14 will not be released this year. The CU14 has been postponed to January 2024. Just last year, the publication of Exchange CUs was changed so that only 2 CUs were to be published per year. The plan was to publish one CU in March and another in September. How ... Read more
Microsoft today released new security updates for Exchange Server 2016 and Exchange Server 2019. The update closes the remote execution vulnerability CVE-2023-36778 and provides a better solution for the vulnerability CVE-2023-21709 from August. There were problems with the August security update and the update was temporarily recalled. The update from October for CVE-2023-36434 ... Read more
Microsoft has recently officially supported HSTS (HTTP Strict Transport Security). However, HSTS is not activated by default and must therefore be activated by the user. But first a few words about HSTS and how it works. What is HSTS and how does it work? HTTP Strict Transport Security (HSTS) is a guideline ... Read more
Microsoft has announced that the next Exchange CU will enable Extended Protection (EP) for Exchange Server 2019 by default. Extended Protection was introduced for Exchange 2016 and Exchange 2019 in August 2022 and previously had to be activated manually. However, anyone who has not yet activated Extended Protection may need to start with the installation of the ... Read more
After the first version of the security update was withdrawn by Microsoft, a bug-fixed version has now been released. According to initial reports, this update can now be installed on non-English Exchange servers without any problems. Click here to download the update: Microsoft has also published a list of instructions on the Exchange Team Blog: On non-English ... Read more
Microsoft has released new security updates for Exchange Server 2016 and 2019. The update fixes 6 vulnerabilities that are marked as important. In addition, further adjustments are necessary after installing the updates. There are currently no indications that the vulnerabilities are being exploited. Click here to download the updates: The following vulnerabilities are fixed: ... Read more
On an Exchange 2019 server, I noticed inherited permissions that were deliberately not set in this way. I suspect that these are standard permissions that are set when Exchange servers are installed. In this case, an account that was used for installation has quite extensive permissions at mailbox and database level. I noticed ... Read more
A reader, who wishes to remain anonymous, has kindly sent me his scripts and configuration for Let's Encrypt, HAProxy and Exchange 2019 in conjunction with Extended Protection so that I can publish them here. First of all, I would like to thank you very much, because I think this configuration (HAProxy as a reverse proxy for Exchange, certificates via Let's ... Read more
Nobert has informed me that Microsoft has updated the prerequisites for the installation of Exchange Server 2019 and 2016. The Windows feature Message Queuing (MSMQ) is no longer required and can be uninstalled from the Exchange servers. The two Windows features "Message Queuing (MSMQ) Activation" and "Message Queuing" are removed with the automatic installation of the ... Read more
