4 ms·

I'm still kinda stuck not trusting dynamic DNS, am I wrong? Self-hosting for me really should include the hardware. Still a hosted service I control updates an

• dsr_ 5y ago
  In what way don't you trust dynamic DNS? It's just a method for updating DNS records. It can be done by a free service, by a paid service, or by your own DNS server.
  • nixpulvis 5y ago
    Right, so another point of failure on top of my ISP. Not to mention that I don't understand the propagation delays impact on delivery well enough, but I'm assuming it's unacceptable. Maybe if I paid for a business class service I could get a nice static IP... one day perhaps.
    • 3np 5y ago
      You can always have a smallest-instance VM on your cloud/hosing provider of choice just for the IP and proxy all in- and outgoing traffic through there. You can get fancy with SMTP proxy that can hold on to undelivered messages if you want, or just use haproxy/nginx plus proxychains/tsocks.
    • dsr_ 5y ago
      The propagation rate for DNS is beyond anyone's control: TTL is advisory, not mandatory. But SMTP has MX records, which implement preference. If you have two SMTP receivers on different networks, it's unlikely that both of them are changing IPs at the same time. If one of those is a paid-for VM, it's probably static, so it will not change IP barring business reasons. $5/month gets you a reasonable VM from any of many different service.
• nix23 5y ago
  Dont use dynamic dns for a email server...big NONO