Network

Open the server → Network tab.

Network information

The panel shows the server's IP address, its network port speed, current bandwidth usage and the DDoS protection tier applied to each address.

Floating IPs

Assign portable public addresses to the server and set their rDNS (PTR record) inline — the reverse record matters for outbound mail, where a mismatched or missing PTR gets messages rejected or filed as spam. Use Request Additional IPs if you need more than your allocation. The full model is in Floating IPs.

Private network

Attaching a private network puts a VLAN on the server's switch port and reserves a private IP for it.

Choose a network with Select a network and click Attach. Unlike a VM, no reboot is needed — the switch configuration is applied in the background.

Important

Attaching is only half the job. The VLAN arrives tagged on the physical NIC, so the operating system won't have the private IP until you configure it. The tab's Setup guide prints the exact values (VLAN ID, IP, prefix, gateway) and ready-made configuration for your OS.

Bring the interface up

The setup guide covers both common styles:

• Netplan (Ubuntu 18.04+) — create /etc/netplan/99-private.yaml with the VLAN block. Replace the parent interface with the logical ethernet name already declared in your netplan (commonly id0 on Ubuntu cloud images, or eno1/enp1s0 on bare installs). Inspect it first with sudo cat /etc/netplan/*.yaml.
• interfaces (Debian) — install the vlan package if it's missing, append the VLAN stanza to /etc/network/interfaces, then bring it up.

Tip

Test a netplan change with sudo netplan try first. It auto-reverts after 120 seconds if you lose SSH, which turns a lock-out into a two-minute wait. Only run sudo netplan apply once you've confirmed the session still works.

Detach removes the VLAN from the trunk on the switch ports and releases the reserved private IP.

Blocked SMTP ports

Outgoing traffic to ports 25 and 465 is blocked by default on all servers, over IPv4 and IPv6, to stop the abuse that would otherwise wreck the IP range's mail reputation.

Use port 587 to send mail through an external delivery provider.

The Blocked Ports card lists each IP address of the server, IPv4 and IPv6, with a badge: Blocked (the default for every new IP) or Open (ports 25 and 465 unblocked for that IP after an approved request). The state is set per IP address, so a server with several IPs can have some open and some blocked; send mail from an IP marked Open. When every IP is open the card says so and the Request Unblocking button disappears.

If you genuinely need direct SMTP, click Request Unblocking to open a ticket and say which IPs you want opened; requests are reviewed case by case and need at least one completed billing cycle and a paid first invoice. Full detail in the VM network guide.

Warning

The unblock belongs to the IP address. Releasing the IP back to the pool closes ports 25 and 465 again for that address, and a new IP always starts Blocked.