Ask HN: How do you protect your Mailserver from DDoS Attacks?
I manage my own mailserver since several years and i think many others here use solutions like Mail-in-a-box, mailcow, Mailu, etc
Until Corona i never had big problems with my mailserver but in the last weeks i got very big incoming Traffic - that was too much for my server and i had to manually reboot it every time ...
I know DDoS protection solutions for websites like Cloudflare - but as far as i know Cloudflare doesn't work with mailserver because of the reverse DNS lookup which is needed to communicate with big email providers.
So does anyone had the same problems and found a solution for it? (A solution other than just switching to Gmail or other big players)
Edit: i changed my fail2ban settings and found out i was primarily targeted by brute force attacks which i should be able to protect against with tools like fail2ban
Until Corona i never had big problems with my mailserver but in the last weeks i got very big incoming Traffic - that was too much for my server and i had to manually reboot it every time ...
I know DDoS protection solutions for websites like Cloudflare - but as far as i know Cloudflare doesn't work with mailserver because of the reverse DNS lookup which is needed to communicate with big email providers.
So does anyone had the same problems and found a solution for it? (A solution other than just switching to Gmail or other big players)
Edit: i changed my fail2ban settings and found out i was primarily targeted by brute force attacks which i should be able to protect against with tools like fail2ban