Authentication Methods for Sending Email

Authentication methods for email sending verify the sender's identity and ensure message verification. They prevent email phishing and spam, help legitimate emails reach the inbox, and protect your brand's reputation. By proving that your messages are genuine, they improve email deliverability. The key authentication methods are DKIM and DMARC, each securing the email-sending process.

DNS (Domain Name System)

DNS is like the internet’s address book, converting domain names into IP addresses that computers understand.

For example, it translates www.example.com to 192.0.2.1, allowing you to use names instead of numbers.

In email marketing, DNS records are essential for authenticating and delivering emails. They help establish trust between your domain and the recipient's email server, ensuring your messages are genuine and reach their destination.

DomainKeys Identified Mail (DKIM)

DKIM proves your emails have not been tampered with. It is like a digital signature for your messages. Netcore signs each email with a private key. The receiving server checks this signature using your public key, which is stored in your DNS. Every signature is unique, ensuring your emails are genuine and unaltered.

Domain-Based Message Authentication, Reporting, and Conformance (DMARC)

DMARC is crucial for protecting your domain and brand. DMARC decides what happens to messages that fail SPF or DKIM checks. You set rules for how receiving servers should handle suspicious emails. DMARC can tell servers to reject fake emails or put them in quarantine. It also sends you reports about emails using your domain name.

Workflow of DMARC

• You publish a DMARC record in your DNS.
• This record tells email servers your policy for handling emails that fail checks.
• DMARC checks if either SPF or DKIM (or both) pass. This is called DMARC Alignment.
• Receiving servers send you reports about emails using your domain.
• You can set a DMARC policy for your primary domain that applies to all subdomains.

DMARC is like an investment in email security. It secures communications and benefits your organization and users. Setting up DMARC is easy.

Here is a sample to get started: v=DMARC1; p=none; rua=mailto:[[email protected]](mailto:[email protected])

Refer to the table below for the description of the various tags.