Linux-Compatible High-Volume SMTP Server

I am in search of a proficient Freelancer who can build a robust SMTP server specifically tailored to Linux OS. It should be capable of handling over 500K+ emails a day. Key tasks include: - The creation of a Linux-compatible SMTP server. - The inclusion of built-in spam filtering capabilities. Ideal Skills: Expert knowledge and experience in: - Linux system administration - SMTP server creation, as well as, - Email spam filtering. Your technical proficiency should ensure the system can adapt to high traffic volume while maintaining efficiency and security. The successful Freelancer must guarantee the delivery of a smoothly running, high-volume SMTP server that is able to filter out spam. ************************ I need a mail server before the following data: 1. Domain based + VPS. 2. An smtp server that will provide the following services: A. Email management system B. Sending/receiving emails c. Managing mailing lists d. Uploading mailing lists e. Sending unlimited daily emails f. Manage an unlimited amount of contacts 3. The server will be used for massive sending of monthly emails, this is 1-3 million daily sending. 4. 10/10 score in spam check ([login to view URL]) 5. Ip rotation 6. Load balancer 7. Bounce server 8. Feed back loop server In addition, the following sections of your proposal must be addressed, otherwise the proposal will not receive a response: 1. Which VPS server is recommended, why? 2. What do I need to provide you besides the VPS server and the domain (including access)? 3. What email management system will be on the server? 4. Do you commit to a 10/10 score in mail-tester? 5. As far as I know that usually the limit of the monthly/daily amount of sending depends on the VPS server, and it is difficult to reach the amounts I mentioned, so what is the maximum I can send? and how can the limit be overcome? 6. It is clear that I will not start sending millions from the first day in order not to be blocked or end up in spam, however, what is the recommended plan in order to get there gradually and without the risk of being blocked / spam?