#dmarc

Marketplace email breaks in an awkward place: the team can know exactly what a customer should...

When an audit asks what a DNS record was yesterday, propagation delay changes the answer. Short...

Pick the record type from what the consumer of that name actually requires, and refuse to substitute...

Use one platform-owned zone, publish three TXT records per tenant subdomain, and let the mail service...

Publish all three as TXT records and let a scheduled job re-apply them. The least complex thing that...

Short answer: enforce each tenant's domain limit in your application database, then reconcile that...

Short answer: SPF and DKIM each make a claim about a message's origin, while DMARC tells a receiving...

Publish SPF, DKIM, and DMARC as three TXT records on the sending domain, verify the result through...

DMARC aggregate reports look hostile but have only three sections. This guide walks through a real RFC 9990 report field by field, shows the seven row patterns you will actually see, and tells you what to do about each one.

Short answer: use a transactional-email path with domain authentication you own, then choose a...

For a short-lived password-reset message, use a provider with domain verification, suppression...

By the team at MailTester Ninja, a real-time email verification API that stores nothing. We took...