DMARC (Domain-based Message Authentication, Reporting & Conformance)

DMARC is an advanced protocol that combines the SPF and DKIM mechanisms to create a comprehensive email security policy for your domain. DMARC not only helps authenticate messages but, most importantly, gives you control over what recipient servers should do with emails that fail SPF or DKIM checks.

How does DMARC work?

As the domain owner, you publish a DMARC record (in the format of a TXT record) in your DNS. In this record, you specify:

The Policy: An instruction for recipient servers on how to handle messages that appear to be from your domain but fail authentication. Possible policies are:
- p=none: (monitor) – take no action, just send me reports.
- p=quarantine: (quarantine) – place suspicious messages in the spam folder.
- p=reject: (reject) – completely reject suspicious messages.
Reporting Address: You provide an email address to which recipient servers from around the world will send regular reports about who is sending email from your domain (and with what verification result).

Why is DMARC important?

Full Control and Policy Enforcement: DMARC turns SPF and DKIM from verification mechanisms into an enforceable security policy. You decide the fate of unauthorized messages.
Visibility and Monitoring: Thanks to DMARC reports, you gain invaluable insight into which servers worldwide are sending emails on behalf of your domain. This allows you to identify all legitimate sending sources and detect impersonation attempts.
Maximum Protection and Deliverability: Having a strict DMARC policy (p=quarantine or p=reject) is one of the strongest trust signals for mailbox providers like Gmail and Yahoo. Today, it is practically a requirement for bulk senders to ensure high deliverability.

DMARC Configuration in EmailLabs

Implementing DMARC is a process that is recommended to be carried out gradually (starting with the p=none policy). In the EmailLabs panel, within the "Sender Authorization" feature, you will find tools and guidance to help you correctly configure your DMARC record.

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Last updated 1 day ago

How does DMARC work?

As the domain owner, you publish a DMARC record (in the format of a TXT record) in your DNS. In this record, you specify:

The Policy: An instruction for recipient servers on how to handle messages that appear to be from your domain but fail authentication. Possible policies are:

p=none: (monitor) – take no action, just send me reports.
p=quarantine: (quarantine) – place suspicious messages in the spam folder.
p=reject: (reject) – completely reject suspicious messages.

Reporting Address: You provide an email address to which recipient servers from around the world will send regular reports about who is sending email from your domain (and with what verification result).

Why is DMARC important?

Full Control and Policy Enforcement: DMARC turns SPF and DKIM from verification mechanisms into an enforceable security policy. You decide the fate of unauthorized messages.

Visibility and Monitoring: Thanks to DMARC reports, you gain invaluable insight into which servers worldwide are sending emails on behalf of your domain. This allows you to identify all legitimate sending sources and detect impersonation attempts.

Maximum Protection and Deliverability: Having a strict DMARC policy (p=quarantine or p=reject) is one of the strongest trust signals for mailbox providers like Gmail and Yahoo. Today, it is practically a requirement for bulk senders to ensure high deliverability.

DMARC Configuration in EmailLabs

Learn more about configuring DMARC in the EmailLabs panel: .