I’m working on self hosting a e-cloud server ( for e/os phones). The mail server component of it wants to have a rDNS PTR record from my public IP back to mail.<myDomain.com>. I can’t do that since I’m using dDNS and my ISP won’t give me that ability unless I have business service (very expensive). The ISP I have is my only choice and I hate them. I have DNS Zones hoisted elsewhere to handle my dDNS scripts for everything but rDNS. So on tyo my question, Anyone know of a way to get a public IP service that will allow me to make a rDNS PTR entry and forward all traffic to my real public IP? Would that even work?
EDIT: Thanks everyone for the suggestions, I have considered VPS but I’m trying to save the extra cost of the VPS and also like the idea of having all my data where I can actually touch it. I was hoping for something like a reverse proxy service I could get with DNS and a static IP (so I could have rDNS) for cheaper than a VPS since I would not need the storage, CPU, etc.
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.