IP addresses and reverse DNS
Every server comes with an IPv4 address and an IPv6 address. More are available on request, and reverse DNS is set by us.
Extra addresses
Ask in a ticket and say what you need them for. IPv4 is scarce and we have to justify assignments to the registry, so “twenty addresses” gets a question back while “twenty addresses for twenty TLS hosts” gets addresses. IPv6 is a different story: ask and you get room.
Already have your own space? Bring it with you and we announce your prefixes from our network.
Configuring them
Extra addresses are routed to your server; you add them to the interface yourself.
On a systemd-networkd or Netplan system that is a second addresses:
entry, on Debian without Netplan an extra stanza in
/etc/network/interfaces. Use the same gateway as your main address unless
we told you otherwise, and remember that
a reinstall wipes this configuration.
Reverse DNS
The PTR record lives on our side, not on your machine — nothing you configure locally changes it. Send us the mapping and we set it:
185.x.x.x → mail.yourdomain.com
Two things worth knowing. First, make sure the forward record exists and points back at the same address; a PTR without matching A record is worse than no PTR for mail delivery. Second, reverse DNS survives a reinstall, so you only do this once per address.
Mail and port 25
If you intend to send mail, set the reverse record, publish SPF and DKIM, and keep your machine from becoming an open relay. A server that starts spamming — deliberately or because something on it was compromised — is an abuse case, and spam is one of the things we do not carry.
Still stuck? Mail support@novogara.com — an engineer answers, at any hour. Back to the knowledge base