Setup Synology Mail Server for own domain and migrate PST data

Goal
Get same mails on my PC and Laptop which both have Outlook client. So we need mailserver.
To start this is for 2 mailaddresses. Both own domain.

What I have
- Synology DS with ‘synology mail server’
- 1 pc where I now get the mails locally from POP3 in Outlook
- 1 pc with outlook client but no mail yet
- Own domains and access to cpanel

What I expect
- You setup mail server on synology for my 2 mail addresses.
- Give me instructions for settings in Outlook
- Migrate the data I now have in local PST to the data in mailserver.

When is project succesfull
- I will be able to send and receive e-mail on 2 different workstations for my mail.