NETWORK & DOMAINS

Email server

Run a mail server for a domain, and the DNS records that make mail from it deliverable.

DockBoard can run a mail server per domain — Postfix and Dovecot in containers, managed from Emails in the dashboard. You get real mailboxes on your own domain without renting a mail provider.

Attaching a mail server

Attach a mail server to a domain, and DockBoard tells you the exact MX, A, SPF, DKIM, DMARC and PTR records to publish. The DNS health tab shows which are missing and which are wrong, checked live.

Publish them at your registrar exactly as given. Mail deliverability is unforgiving: a receiving server that cannot verify SPF and DKIM will put your mail in spam, or refuse it.

Reverse DNS — the one record you cannot set here

The PTR record maps your server’s IP back to mail.<your-domain>, and only your hosting provider can set it. Most control panels have a “Reverse DNS” field on the server or IP page. Without it, major providers will reject your mail regardless of how correct everything else is.

Before you send anything

Every record in the DNS health tab is green.
Reverse DNS is set at your provider and resolves to mail.<your-domain>.
Port 25 is open outbound. Many providers block it by default and will unblock it on request.
Send a test to an address you control at a large provider, and read the message headers to confirm SPF, DKIM and DMARC all pass.