Email Security for Indian Businesses — DMARC, SPF & DKIM Setup Guide

Why Email Security Matters

Email spoofing is the #1 vector for phishing attacks in India. Without proper authentication, anyone can send emails pretending to be your organization.

The Three Pillars of Email Authentication

SPF (Sender Policy Framework)

SPF specifies which mail servers can send emails for your domain.

**Example TXT record:**

v=spf1 include:_spf.google.com ~all

DKIM (DomainKeys Identified Mail)

DKIM adds a digital signature to verify email authenticity.

**How it works:**

1. Generate DKIM key pair

2. Publish public key in DNS

3. Mail server signs outgoing emails

4. Recipient verifies signature

DMARC (Domain-based Message Authentication)

DMARC tells receivers what to do with emails that fail SPF/DKIM checks.

**Example DMARC record:**

v=DMARC1; p=reject; rua=mailto:dmarc@yourdomain.com

Implementation Steps

1. **Audit current email setup**: Check existing DNS records

2. **Implement SPF**: Add sender IP addresses

3. **Configure DKIM**: Generate and publish keys

4. **Deploy DMARC**: Start with p=none, move to p=reject

5. **Monitor reports**: Review DMARC aggregate reports

Common Mistakes

Benefits of Implementation

Verify your email security configuration at [vaarta.space](https://vaarta.space).