I kindly appreciate your time to look into this thread. How can i achieve to have different servers with different IPs for running Email services (Postfix +dovecot with virtual users in MySql database)
Example: I need to configure email services like below

Incoming Mail Server (POP3): pop3.test.com
Incoming Mail Server (IMAP): imap.test.com
Outgoing Mail Server: (SMTP): smtp.test.com
Outgoing Mail Server: (SSMTP): ssmtp.test.com ssmtp port: 465

How to proceed to achieve the results above,
I am desperate to have this kind of configuration for email services, looking forward for your valuable inputs. Thank YOu