I’d like to know if it’s possible to use a web security filter (WAF) in an environment that includes Exchange Server

Hi @Tsat Zovokov

Thank you for posting your question in Microsoft Q&A. 

As my research, I have reviewed all relevant articles regarding Exchange Server 2019 and WAF (Web Application Firewall/Filter) configuration. Currently, there is no official documentation from Microsoft confirming native support for WAF in Exchange Server 2019. However, it is technically feasible to install and configure a WAF with Exchange 2019. As long as the required ports are properly opened and the WAF is correctly configured, it should function without issues. 

You can refer via: Exchange server and WAF - Microsoft Q&A 

To help you reach your goal more effectively, I recommend posting a thread on the Microsoft Tech Community forum. It’s a great platform for deeper technical discussions and connecting with individuals who have hands-on experience and expertise. They’re best positioned to provide guidance and suggest potential solutions. As a forum moderator, I don’t have access to detailed documentation or insights into specific issues you might encounter when configuring a WAF with Exchange Server 2019.

If you have any additional concern, feel free to comment below. I be more than happy to assist.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".      

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.