Microsoft Exchange and Active Directory Blog
I had already announced that I would like to test whether artificial intelligence (AI) could offer added value here. In the meantime, the idea has matured somewhat and I have realized that I have not defined "added value" at all. So I have been thinking about the topic of "added value". As the operator of this website, I am pleased ... Read more
Managing email size limits in Exchange Server is an essential part of administration to optimize server performance and control bandwidth and storage usage. In this post, we will explain the various aspects of email size limits in Exchange Server and provide practical examples of how administrators can manage them effectively. ... Read more
Artificial intelligence has been an absolute hype topic for some time now and huge sums of money are being invested in the development of ever better AI models. Last year, I published a small article on OpenAI and ChatGPT and an incredible amount has happened in the past few years when it comes to artificial intelligence. I have always ... Read more
The first part of this article dealt with the requirements and the potential problems associated with them. The second part now deals with the management of SPF entries. In a relatively small and static environment, you will have very few points of contact with the Sender Policy Framework. As a rule, small environments in the ... Read more
It can happen that Exchange 2019 servers log the EventID 1006 (source: MSExchange Mailbox Replication). The text of the warning is as follows: The warning occurs approximately every 2 minutes. The warning occurs when a database has been deleted and is fortunately very easy to resolve. These are not problems with ... Read more
Managing the Sender Policy Framework (SPF) entries can be time-consuming in more complex environments, as there are a few things to consider: The SPF entry has become very important for sending mails. Most providers and recipients reject mails from servers that are not in the SPF of the domain. Mails from ... Read more
I own a UniFi Cloud Gateway Ultra and the SSL error message in the browser has been bothering me. Unfortunately, it is also not possible to simply import the self-signed certificate of the Cloud Gateway into the browser. Since the original certificate contains neither the IP nor the DNS name of the Cloud Gateway, the browsers complain ... Read more
The CERT-Bund warns on X of more than 15,000 Exchange servers in Germany that are openly accessible from the Internet with at least one vulnerability. Some of the vulnerabilities are already being actively exploited. In March 2024, the BSI had already warned of 17,000 Exchange servers that are openly accessible from the Internet and contain known vulnerabilities. The ... Read more
When configuring mailbox permissions for a group, the following error may occur: The user "testgruppe" was found in Active Directory but isn't valid to use for permissions. Try an SMTP addressinstead. Permissions for groups can only be assigned if it is a security group. For a security group, the values for ... Read more
It's been a while, but I still wanted to give you a brief update. Microsoft has introduced Office 2024. Outlook 2024 is also included in the new Office. This means that there is also a fresh Outlook for Exchange Server SE. Unfortunately, the new Office does not yet appear in my Visual Studio subscription. The various ... Read more
