DMARC is a powerful email authentication protocol that can help protect your domain from fraud and abuse. It builds on the already widely deployed SPF and DKIM protocols, adding in additional checks and balances to help verify the identity of the sender. DMARC also provides recipients with a way to handle authentication failures, and gives senders feedback on how their messages are being handled. This feedback can be invaluable in monitoring the effectiveness of your domain's anti-fraud measures.
Why is DMARC important ?
The social internet and the ubiquity of e-commerce have created a tremendous financial incentive for spammers and phishers to compromise user accounts. Email is easy to spoof, and criminals have found that spoofing is a proven way to exploit user trust in well-known brands. Simply inserting the logo of a well-known brand into an email can give it instant legitimacy with many users. Users can't tell a real message from a fake one, and mailbox providers have to make very difficult (and often incorrect) choices about which messages to deliver and which ones might harm users. Senders remain largely unaware of problems with their authentication practices because there's no scalable way for them to indicate that they want feedback and where it should be sent. Those attempting to deploy new SPF and DKIM authentication measures proceed very slowly and cautiously because the lack of feedback also means they have no good way to monitor progress and debug problems. DMARC addresses these issues by helping email senders and receivers work together to better secure emails, protecting users and brands from costly abuse.
What is DMARC & how it protects from phishing?
DMARC, or Domain-based Message Authentication, Reporting, and Conformance, is an email authentication standard that helps organizations combat phishing. DMARC works by verifying that email messages are coming from authorized sources and then taking action if they are not. This action can include rejecting the message or quarantining it for further review. DMARC also provides a way for organizations to receive reports about messages that failed authentication checks. This information can be used to improve email security and help stop phishing attacks.
Why is DMARC needed?
DMARC is needed because it helps reduce the amount of spam in your inbox. It also helps improve email deliverability by making it easier for ISPs to identify and filter out spam messages. Additionally, DMARC can help prevent phishing attacks by ensuring that only messages from trusted sources are delivered to your inbox.
DMARC Setup in DNS
Step 1: Create a DMARC Record
Step 2: In your DNS create a DNS TXT record
Step 3: In the Type box, select TXT Record Type
Step 4: In the Host Value box, enter _dmarc as the “host”
Step 5: In the TXT Value box, enter the record you created using the DMARC Record Creator
Step 6: Save the DMARC record
Step 7: Validate the DMARC setup
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