==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.3.2 (MARIADB edition)
- Deployed with iRedMail Easy or the downloadable installer? Downloadable installer
- Linux/BSD distribution name and version: CentOS-7-x64-minimal +headless
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MariaDB
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====
OS: CentOS-7-x64-minimal +headless

Hiya,

I'm looking to implement the downloadable version on a portable lightweight slimline PC to use as my mail-server at home. In this case, what shall I set the Domain name and where to purchase a dedicated IPv4 to be able to connect it to my Hostname?
I wanted to say, in case I want to use a local PC as a mail server, do I need to purchase an IPv4 or just purchasing a domain name will be enough(Can I point my A-Records to an external Server's IP, that the same IP accessible in the local network to me as I have OpenVPN on that Server to bring the same server's IP to my local network, thus my local mail-server will be able to work and send and receive mails)?

If you would be able to help me by advising me on how to implement this, I appreciate it.

How can I have a local mail-server at home that I use a domain as Hostname to receive the emails and send the emails and in this case what happens for the IPv4 that shall be allocated to the mail-server as the A-Records of the domain name? If I allocate a local IPv4 in my network, I may able to send emails but may not be able to receive emails, how shall I fix this issue, please? How shall I implement this on the cleanest and professional and high-performance concept, please?

Tnx and best of luck