Hi @Hossam Bakhit,
Welcome to the Microsoft Q&A platform!
Yes, you can mix perpetual volume licenses with subscription-based licenses from a Service Provider License Agreement (SPLA) provider in the same Exchange environment. However, there are a few key considerations:
- Ensure that all users and devices accessing your Exchange environment are properly licensed according to the terms and conditions of both the perpetual volume licenses and the SPLA licenses.
- Track which users are covered by perpetual licenses and which are covered by SPLA licenses to ensure compliance in case of audits.
- Ensure that the version of Exchange Server you use is supported under both licensing schemes.
- Verify that the mixed-use licensing model does not cause any technical or support issues in your Exchange environment.
- Assign perpetual licenses to specific user mailboxes and ensure that the rest of the users are covered by SPLA licenses.
Please feel free to contact me for any updates. And if this helps, don't forget to mark it as an answer.
Best,
Jake Zhang