Email Security
4 min read
Why Exact-Domain Spoofing Is Still Common, and What Stops It
Anyone can put your domain in the From line of an email. What DMARC enforcement stops, what it cannot stop, and why a policy left at p=none protects nobody.
SentraDMARC Blog
Guides to DMARC, SPF, DKIM and the rest of email authentication, and plain accounts of how SentraDMARC works, what it costs and where it runs.
Subscribe via RSSGuides
4 min read
Setting Up SentraDMARC, Step by Step
What you see on each screen of setup, how long the parts outside our control usually take, and what happens when a DNS record is not quite right.
Guides
4 min read
Day to Day: From "Who Is Sending as Me" to Reject
A walkthrough of a typical first month: sorting your senders, fixing the ones that fail, and moving your DMARC policy up one approved step at a time.
Pricing
4 min read
Pricing Without Surprises
What each plan includes and costs, how the trial works, what happens past your volume limit, and exactly what cancelling does to your DNS records.
Data Protection
4 min read
A European DMARC Platform: What It Means, and What It Doesn’t
Where SentraDMARC runs, which providers outside the EU are involved and what each sees, and what GDPR, the DPA and our retention windows commit us to.
Email Security2 min read
DMARC vs SPF vs DKIM: The Complete Guide
SPF authorizes the server, DKIM verifies the message, DMARC enforces the policy. How the three email authentication protocols differ and work together.
Industry News2 min read
Why Google and Yahoo Now Require DMARC
New sender requirements from major email providers mean DMARC is no longer optional. Learn how to stay compliant and avoid the spam folder.
Hosted DNS2 min read
Monitoring and Hosting Are Different Jobs
Every tool in this category reads your DMARC reports. This one also holds the records they describe. What that changes, and what stays with your mail provider.