Fastmail, Runbox, and Posteo under DDoS extortion attack
Is the attack on its webmail&#x2F;website or on their smtp servers? I’ve been wondering about this, but how does one protect smtp servers from distributed attacks? Let’s assume smaller attackers, do you just need good firewalls in front of your servers to prevent congestion to the smtp servers? Are there off the shelf tools that can be configured to help here (pf maybe)? Do tools like fail2ban help?<p>For context, I’ve picked up self-hosting again after many years and though I don’t anticipate being a target for large attacks I have been curious what tools individuals have at their disposal or if it’s a fools errand to even try.