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How to Delete Address Book Policy (ABP), Global Address List (GAL) and Address List (AL) in Exchange Server?

In the modern business world, information and communication management is of vital importance. Microsoft Exchange Server provides organizations with important tools in this area. In particular, Address Book Policy (ABP), ...
Read moreMainstream Support Ends for Exchange Server 2019: Post-Mainstream Support Roadmap

Microsoft has announced a new roadmap for On-Premises Exchange Server and announced that the new on-premises Exchange Server will be released in 2025. As I mentioned in my previous articles, the new ...
Read moreExchange Server November Security Update Released

Microsoft has released Security Updates (SUs) for vulnerabilities found in certain versions of Exchange Server. These updates apply to Exchange Server 2019 and Exchange Server 2016, and ...
Read moreExchange Server and ReFS

Resilient File System (ReFS) is one of the latest innovations in file system technologies from Microsoft. It is specifically designed to be more resilient to data corruption. Like MS Exchange Server, ...
Read moreConfiguring HSTS in Exchange Server

In addition to web-based access, Exchange Server also has external services. Therefore, the security of such services is extremely critical. HTTP Strict Transport Security (HSTS) plays a critical role in increasing this security. HSTS requires that only the secure HTTP protocol HTTPS be used to access Exchange Server's web services. Thus, it minimizes potential security threats and data breaches. HSTS automatically redirects insecure connection requests created by mistake or with malicious intent to HTTPS. In addition, in the event of SSL certificate errors, it ensures that the connection is directly disconnected without allowing users to make faulty connections.
Read moreExchange Online Starts Blocking and Reporting Email from Legacy Exchange Servers

Microsoft is taking a major step in addressing emails coming from old and outdated Exchange servers in its Exchange Online environment. In an announcement made on March 23, it was announced that emails coming from these servers will be checked ...
Read moreExchange Server 2016/2019 Antivirus

AV Exclusions are essential for protecting Exchange Server while minimizing risks to performance and data integrity. However, it is critical to configure antivirus exclusions correctly and review these configurations regularly. With the right AV Exclusions strategy, organizations can maintain both the security and performance of their Exchange Server at the highest level.
Read moreExchange Management Console – Attempt to connect to http://server.domain.com/PowerShell using “Kerberos” authentication failed

As you know, Exchange Server 2010 is a product that is no longer supported by Microsoft and you need to upgrade your Exchange Server 2010 servers in your environment urgently. One of our customers ...
Read moreConfiguring Exchange Server 2019 TLS 12

In our previous article, we shared TLS information for Exchange Server. Securing Exchange Server 2019 with TLS Protocols – Cengiz YILMAZ | Sys Blog This article ...
Read moreUnderstanding the Discrepancies Between Exchange Mailbox Sizes and Exported PST File Sizes

The differences between the file size of an Exchange mailbox and its export as a PST file can be due to several different factors. This article has covered in depth the possible reasons for these differences and how to manage them. With good management and precautions, such issues can be minimized.
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