Microsoft Exchange and Active Directory Blog
In a somewhat older article, I already mentioned InfluxDB, Grafana and Telegraf. Grafana makes it easy to create attractive dashboards for all kinds of systems. The three tools mentioned are often used for the dashboards, InfluxDB as a database for storing the metrics, Grafana and displaying the dashboards and Telegraf to ... Read more
I have just uploaded version 3.8 (code name Leslie). This is the first version that has a "code name" because Leslie (the Leslie) was kind enough to dig through the many lines of PowerShell code and found and reported some bugs. The following bug fixes are included in version 3.8: updatereport.ps1: The module showed the ... Read more
Yesterday, Microsoft released a new security update for Exchange Server 2013, 2016 and 2019. The update closes the vulnerability CVE-2020-16969. The vulnerability can be exploited with a specially crafted email, so the update should be installed promptly. The update is classified as "Important". Microsoft describes the vulnerability as follows: An information disclosure vulnerability exists in ... Read more
Originally I had given up the plan to write another white paper on the subject of "Exchange and certificates". However, there still seem to be very frequent problems with the configuration of certificates in connection with Exchange servers. There are already a few articles and scripts here, so now a comprehensive whitepaper on the subject will follow ... Read more
Microsoft has released new Cumulative Updates (CU) for Exchange 2016 and Exchange 2019 today: Exchange Server 2019 Cumulative Update 7 (KB4571787), VLSC Download Exchange Server 2016 Cumulative Update 18 (KB4571788), Download, The Exchange 2019 CU 7 is also already available for download via MyVisualStudio. Here is a list of the fixed issues: 4570248 "Get-CASMailbox" uses a ... Read more
Microsoft has released a security update for Exchange Server 2019 and Exchange 2016 to close a vulnerability classified as "critical". Specifically, it concerns the vulnerability CVE-2020-16875: A remote code execution vulnerability exists in Microsoft Exchange server due to improper validation of cmdlet arguments. An attacker who successfully exploited the vulnerability could run arbitrary code ... Read more
Once an Exchange 2019 server has been configured, an SSL certificate needs to be installed. To configure the certificate correctly, the hostnames that are relevant for the certificate must be determined. The following script reads the hostnames from the configured URLs of the virtual directories and displays the corresponding hostnames in the Exchange Management Shell ... Read more
During an Exchange migration, the "old" Exchange server may not be able to deliver mails to the new Exchange server. This happened during an Exchange 2013 to Exchange 2019 migration. Mails on the Exchange 2013 server to mailboxes that had already been migrated to Exchange 2019 could not be delivered. The ... Read more
I have received a request from a customer that he would like to have his meeting rooms sorted or displayed by location. How can I implement this requirement? I implemented it with address lists and a custom attribute. The first step is to create the address lists by location, as shown here in the example Bielefeld, Düsseldorf, Frankfurt, Hamburg, Munich and ... Read more
Somehow it doesn't seem like that long ago, but the end of mainstream support for Exchange 2016 is actually approaching. From October 14, 2020, Exchange 2016 will be in the Extended Support phase, which means that there will be no more CUs and only critical security updates and updates for the time zones will be available ... Read more
