SPF, DKIM and DMARC: do you need all three?
SPF, DKIM and DMARC help receivers trust a domain's email. They are not always all mandatory, but together they make the setup stronger.
Reviewed:
The practical question
When you configure professional email, three names appear very quickly: SPF, DKIM and DMARC.
They sound technical, but the idea is simple: help other mail servers decide whether email claiming to come from your domain should be trusted.
Quick answer
You do not always need all three just to send email.
In many simple cases, a correct SPF record is enough for email to work reasonably well.
But for a stronger modern setup, it is better to have:
- SPF;
- DKIM;
- DMARC with a cautious policy, usually
p=noneat first.
What does each one do?
SPF answers: is this server authorised to send for this domain?
DKIM answers: does this message carry a valid domain signature?
DMARC answers: what should receivers do when the checks do not match?
They are not three versions of the same thing. They are different parts of the same trust system.
What if you only have SPF?
For many small domains and simple services, SPF may be enough.
If mail only leaves through PRIMARI.NET servers and the SPF record is correct, you have a good base.
The limitation is that SPF does not sign the message. Some receivers prefer to see DKIM too, especially with forwarding, filters or stricter policies.
What if you have none of them?
Email may still leave, but it has less credibility.
You may see more spam placement, warnings to recipients, or difficulty dealing with impersonation attempts.
Recommended order
A careful order is:
- Correct SPF.
- DKIM enabled and published in DNS.
- DMARC with
p=none. - Later, consider
quarantineorreject.
There is no need to rush. A simple correct setup is better than an aggressive one that blocks legitimate email.
How PRIMARI.NET approaches this
PRIMARI.NET tries to make this part as painless as possible.
If email and DNS are both managed by PRIMARI.NET, the panel can prepare the right records. If DNS is external, it shows what to publish.
The goal is not to sell technical mystery. The goal is to leave the domain with a coherent, reviewable setup.
When to contact PRIMARI.NET
If you are unsure who sends email for your domain, if old records already exist, or if messages go to spam, we can review the setup before changing anything.