What is DMARC and how to set it up

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We’ll go over what you’ll need and how to add DMARC to your DNS to configure DMARC for your company’s email. Simply follow these DMARC configuration procedures.

Why is DMARC used?

An email has never been more significant due to its sheer ubiquity and unquestionable use. However, it has never been safe because of a major flaw: anybody may send an email using someone else’s identity. Because of this one fact, email has become a cash cow for hackers who spoof business email accounts to mimic senior executives and trusted brands in phishing schemes targeting employees, customers, and the general public.

These aren’t simply one-time occurrences though. We’ve written extensively on how imposters are growing skilled in their impersonation of providers in order to scam whole business supply chains. Email impersonation now accounts for more than half of all Internet-related company losses.

However, the impact of these attacks spreads well beyond their immediate victims. If you are impersonated, your firm may lose revenue, suffer litigation, and face severe regulatory fines. Furthermore, bad news headlines and social media rants about crimes committed in your brand’s name might make your genuine, revenue-generating emails poisonous, even if they aren’t blocked entirely.

Domain-based Message Authentication, Reporting, and Conformance (DMARC) assist enterprises in preventing all of this. Here’s how…

DMARC explained

DMARC is an open standard email authentication mechanism that works with SPF and DKIM to prevent the fraudulent use of genuine brand domains in email assaults. At its most basic, DMARC allows email receiver systems to detect when an email does not originate from one of a certain brand’s permitted senders, and it offers the brand the option to instruct receiver systems on what to do with these unauthorized emails.

What exactly is DMARC enforcement?

When you develop a DMARC enforcement policy for your company, you are instructing email receiving systems on what to do when an email purporting to be from one of your permitted domains fails authentication. Among these policies are the following:

p=none: Email is transmitted without restriction to its intended recipient.

p=quarantine: Email that fails authentication is sent to the garbage bin of the intended recipient.

p=reject: Emails that do not pass authentication are destroyed and never reach their intended recipient.

DMARC setup steps

You should have SPF and DKIM deployed and authenticating messages for at least 48 hours before setting up verify your DMARC records. Then, you can follow these DMARC setup steps to add DMARC to your DNS.

Create a DMARC record as the first step. Make the necessary TXT record. It should look like the following example: rua=mailto:dmarc-pass@; V=DMARC1; p=none;

The p=none tag shows that you are simply interested in gathering input. For emails that fail authentication, you might also use p=quarantine or p=reject tags.

To generate a DNS TXT record in your DNS, follow these DMARC setup instructions.

Log into your DNS hosting provider’s administrative panel, and while this varies per provider, you want to find the page that allows you to add a DNS TXT record.

Step 3: In the ‘Type’ field, type TXT Record Type.

Step 4: Enter _dmarc as the host in the ‘Host Value’ field.

Step 5: Enter the record you prepared with the DMARC Record Creator in the TXT Value box.

Step 6: Make a backup of the DMARC record.

Step 7: Verify the DMARC configuration.

Use EmailAuthi’s DMARC Checkup Tool to ensure that DMARC is properly configured.

Taking DMARC to the next level

It merely takes a few minutes to configure DMARC in DNS. However, in order to be successful against brand imitation, DMARC must be set to its most stringent enforcement level, p=reject. While this is quite simple when dealing with a single domain, it may be hard and time-consuming for enterprises with thousands of domains spread over hundreds of email senders and outside email distribution partners.

That is where EmailAuth comes in. It makes email authentication a piece of cake for you. EmailAuth employs multiple automated tools to secure your domain using email authentication protocols such as DMARC, DKIM, BIMI, and SPF. Once you have EmailAuth’s tools deployed, you won’t need to worry about the safety and sanctity of your domain. Don’t just take our word for it! Try EmailAuth today!

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