Use your ISP's or a trustworthy mail provider's mail out to send outbound mail. Receiving mail on dyndns and no rDns should work without major problems. Ensure to configure SPF, dkim and dmarc accordingly. This can be a real challenge to get right on such a setup.
Use your ISP's or a trustworthy mail provider's mail out to send outbound mail. Receiving mail on dyndns and no rDns should work without major problems. Ensure to configure SPF, dkim and dmarc accordingly. This can be a real challenge to get right on such a setup.