What is DMARC?
DMARC, short for Domain-based Message Authentication, Reporting & Conformance, is an email authentication protocol to check if an email message really originates from where it claims to have, based on SPF and DKIM. In addition to email authentication, it also adds reporting capabilities, so that domain owners can examine email delivery statistics on their domains.
Why use DMARC? Does DMARC prevent spoofing?
Yes, it does. When DMARC is implemented in the reject mode, it prevents all spoofing emails from ever reaching the inbox.
Who is using DMARC? Give me some companies using DMARC?
Most (if not all) email service providers support DMARC, which is the de facto email authentication in the industry. Not supporting DMARC would be an anomaly.
Companies that support DMARC include: Google, Microsoft, Amazon, LinkedIn, and many more.
Is DMARC for small and medium-sized businesses (SMB) or large enterprises?
DMARC is necessary for any business who cares about their email security and brand reputation, be it big or small.
Is implementing DMARC hard?
Not all all. You can generate a DMARC record using our free online DMARC record generator and publish it in the DNS in 5 minutes, and start seeing aggregate reports dripping in after a day or two. That will give you some insight into the email streams on your domain, then you can move on to implement the quaratine/reject modes of DMARC.
Should I use DMARC?
You should in order to protect your domain from being email-spoofed, your brand reputation from being blemished, and your business from direct financial loss, stolen intellectual property, etc.
What is DMARC record?
A DMARC record is a TXT record published in the DNS to tell email servers how to handle unauthenticated emails, and where to report email stats to. A DMARC record is published by the domain owner, and enforced by email servers.
What is DMARC policy?
A DMARC policy is the value specified by the
p= tag inside a DMARC record. It has 3 modes: none, quarantine, and reject. Email servers rely on it for the disposition of unauthenticated emails.
How do I get/create/build/generate a DMARC DNS record?
You can use DMARCLY's free tool to create a DMARC record. Simply enter the settings, hit the Generate DMARC Record button, and you will have a DMARC record. Access DMARC record generator here.
How do I add a DMARC record in DNS?
Once you have your DMARC record ready, log in to your DNS service provider's dashboard, and create a TXT record on the target domain. Set the host to _dmarc and the value to the DMARC record.
If you are using a common DNS service provider, check one of the tutorials below:
- How to Add DMARC Record in GoDaddy: GoDaddy DMARC Setup Guide
- How to Add DMARC Record in CloudFlare: CloudFlare DMARC Setup Guide
- How to Add DMARC Record in Namecheap: Namecheap DMARC Setup Guide
Who sends DMARC reports?
Nowadays, almost all email service providers support sending DMARC aggregate reports, including: Gmail, Office 365, Yahoo! Mail, and many others. Although a lot fewer ESP's send forensic (failure) reports, due to privacy and volume concerns.
Can I buy DMARC for my email?
Sure you can! DMARCLY is a DMARC report analysis service provider which handles all the chores ranging from setting up recipient mailboxes, parsing reports, to rendering reports. This comes in handy as you can save time for more productive tasks.
Still have more questions? Leave them in the comment section, and I will add to the article!
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