Fix · Domains and DNS

Set up email DNS records (MX, SPF, DKIM, DMARC)

Blocks your workNot checked against the vendor's current screens

What you may see

I want business email on my domain and do not know which records to add
Email to my domain bounces

Most likely cause

Receiving mail needs MX records that point to your mail provider; sending trusted mail needs SPF, DKIM and DMARC records.

Check first (about two minutes)

Which provider hosts the mailboxes (the one that gave you the addresses)?

The fix prompt

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The exact error or what you see

What you did before it happened

Kept only in this browser, on this device. Keys and passwords are removed before anything is saved.

Prompt language

You are a patient senior engineer who knows domain names and DNS settings and explains them to people who are not developers. I am not a developer, so explain every step in plain words and tell me exactly which button, menu or command you mean. If you are not sure about something, say so; do not guess.

Menu and button names change over time. If you cannot find a button or page I mention, say so and tell me what to look for instead of guessing.

THE PROBLEM
Set up email DNS records (MX, SPF, DKIM, DMARC)

THE EXACT ERROR OR WHAT I SEE
[paste the exact error here]

WHAT I DID BEFORE IT HAPPENED
[write in a few words what you did before it happened]

MOST LIKELY CAUSE
Receiving mail needs MX records that point to your mail provider; sending trusted mail needs SPF, DKIM and DMARC records.

DO THESE STEPS, IN THIS ORDER
1. Ask me which provider(s) send and receive mail for the domain (mailboxes, website forms, newsletters).
2. Tell me the records each provider needs; combine them into ONE SPF record, and add DKIM records exactly as shown by each provider.
3. Start DMARC in monitoring mode (policy none) with a report address I read, and only tighten it later after checking reports.
4. Tell me how to test sending and receiving with two outside mailboxes.
Stop and tell me if what you see does not match a step. Do not skip ahead.

CHECK THAT IT WORKED
- Mail to and from the domain works with SPF, DKIM and DMARC passing.
Tell me exactly what I should see on the screen when it works.

DO NOT CHANGE
- Do not remove the existing MX records while testing.
- Anything I did not ask about: the design, the text, other pages, other settings or the data.
- Do not delete files, data or branches, do not reset or force-push, and do not rewrite history, unless you first show me exactly what would be lost and I say yes.
- Do not paste, print or ask me to paste a password or secret key into this chat. If one is needed, tell me which settings page of the right service to store it in.

WHEN YOU FINISH
Explain in simple words what you changed (file by file or setting by setting), why you changed it, and how I can undo it.

Paste it into Claude, ChatGPT, Gemini or Cursor, then follow what it says.

After you tried it, did it work?

Steps

Ask me which provider(s) send and receive mail for the domain (mailboxes, website forms, newsletters).
Tell me the records each provider needs; combine them into ONE SPF record, and add DKIM records exactly as shown by each provider.
Start DMARC in monitoring mode (policy none) with a report address I read, and only tighten it later after checking reports.
Tell me how to test sending and receiving with two outside mailboxes.

Do not do this

Do not publish two SPF records.
Do not remove the existing MX records while testing.

Try another entry