Using Cloudflared to Route Mail Traffic (ports 25, 587 & 993)

I am a Starlink customer so I have been assigned a CGNAT IP. I have been unable to run my mail server behind Starlink. I think the problem is the way they set up their reverse DNS records or maybe it is the CGNAT. I have been running the same server on my prior ISP’s static IP for years without issue.

I would like to use Cloudflare tunnel to route all mail traffic on ports 25, 587 & 993 to my server sitting behind Starlink. Is this possible?

I would appreciate any tips or anyone who can point me in the right direction.

Cloudflare tunnels can generally only be used to route traffic which can be proxied by one of Cloudflare’s HTTP/s related ports so this won’t work. The exception to this would be Warp to tunnel, but one assumes you aren’t trying to just expose your origin server to your authorized users running the Warp client, but instead ot the broader Internet… which is nott a feature of Warp to tunnel.

Bummer. I guess I’ll just have to run a VPS and create a VPN tunnel with that.

Thanks for your help.

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