Question 1

What is a DMARC record and why do I need one?

Accepted Answer

A DMARC record is a DNS TXT record that tells receiving mail servers how to handle email that claims to come from your domain. It also defines where reports should be sent so you can monitor authentication results. You need one to help protect your domain from spoofing and phishing, and to improve visibility into how your email is being used across the internet.

Question 2

How do I choose the right DMARC policy for my domain?

Accepted Answer

Start with p=none if you want to monitor email traffic before enforcing a stricter policy. This lets you collect reports and identify legitimate senders without blocking messages. Move to p=quarantine when you are ready to send suspicious mail to spam, then use p=reject for stronger protection once your SPF and DKIM setup is stable.

Question 3

Can I use multiple email addresses for reporting in the DMARC record?

Accepted Answer

Yes. DMARC supports multiple reporting addresses in some setups, but the exact format must follow DNS and DMARC syntax rules. If your tool only accepts one address per field, use the addresses it generates and confirm they are valid before publishing the record.

Question 4

What do the SPF and DKIM alignment modes mean?

Accepted Answer

Alignment modes control how closely the visible From domain must match the domains used by SPF and DKIM authentication. Relaxed alignment allows some variation, while strict alignment requires an exact match. Relaxed alignment is common for most domains. Strict alignment offers tighter control, but it can be harder to maintain if you use multiple email services.

Question 5

How can I verify that my DMARC record is working correctly?

Accepted Answer

After publishing the record, check that the TXT entry appears in your DNS and that the syntax matches the generated output. You can also send test emails and review DMARC aggregate reports for authentication results. If messages are being rejected or filtered unexpectedly, review SPF, DKIM, and alignment settings first. A DNS lookup and email header check can confirm whether the record is being read properly.

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