Perhaps they didn't retroactively apply it to existing customers, but when I was a new customer back in Dec. 2021, I had to request an unblock for port 25, so it's definitely something they do. The Cloud FAQ covers it: https://docs.hetzner.com/cloud/servers/faq/#why-can-i-not-send-any-mails-from-my-server
I don't remember the process being overly difficult, but I was pretty verbose with my request and had long standing infrastructure to point to. -Frost On Fri, Jan 2, 2026 at 3:54 AM Ralph Seichter via mailop <[email protected]> wrote: > * Michael Grimm via mailop: > > > Hetzner blocks port 25 by default, now. You have to ask Support to > > get you unblocked. > > Say what? In my 15+ years as a Hetzner customer, they have never blocked > any port for any of the dedicated servers or VMs I have rented. Not once. > I wonder why things might be different for you? > > -Ralph > _______________________________________________ > mailop mailing list > [email protected] > https://list.mailop.org/listinfo/mailop >
_______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
