We recommend enabling TLS 1.2 on Exchange Server 2013/2016/2019 and disabling TLS 1.0, TLS 1.1, and TLS 1.3. Even though TLS 1.3 is newer, you should disable it. That's because TLS 1.3 is not supported for Exchange Server and causes…
The organization got a parent and child domain. Both the domains contain criss-cross members and groups. Everything works when copying the members from one AD group to another in the same domain. But, an error appears when we want to…
How to test that the Exchange Server exclusions are correctly excluded from the Antivirus? We already showed how to run a PowerShell script and get the Antivirus exclusions for Exchange Server 2013/2016/2019. The script runs on the Exchange Servers, and…
What is an excellent way to check the Exchange Server before applying an Exchange Cumulative Update? Many issues can happen when you run the Exchange Cumulative Update on the Exchange Server, leaving the Exchange Server in a failed state. It's…
Remove alias from Microsoft 365 Groups in your cloud-based organization. The Microsoft 365 group is also known as Unified Group. A Unified Group is only available in the cloud. To remove an alias from Unified Group, you can use Microsoft…
How to export distribution group members to CSV file? We want to have a list of all distribution groups and all members of the group. In this article, you will learn how to bulk export distribution group members to CSV…
Clients are not connecting to the Exchange Server after an Exchange update. When you browse to Exchange Server OWA and ECP, it's showing errors or a blank page. The first thing you need to check is if the Exchange services…
The default calendar sharing permissions in Exchange Online are set as AvailabilityOnly. What if you want to change that? It's possible to change default calendar permissions for the users one by one, but that will take time. Another way is…
Incidents and problems are surfacing about Exchange Server, and you like to check the Exchange Server health. What is the best way to check the health? Perhaps you want to add a new Exchange Server to the environment, and before…
How to test SMTP communication with PowerShell? After you enable the SMTP service on the firewall for a specific system or configure an anonymous SMTP relay, you like to check that SMTP works. Telnet is your choice. But, what if…