What is MailShield?
MailShield is an email security monitoring platform that helps organizations monitor, verify, and improve the security posture of their email infrastructure.
The Problem
Email remains one of the most exploited attack vectors in cybersecurity. Common threats include:
- Email Spoofing: Attackers forge sender addresses to impersonate your organization
- Phishing Attacks: Fraudulent emails trick recipients into revealing sensitive information
- Business Email Compromise (BEC): Sophisticated attacks targeting employees with fake executive emails
- Domain Impersonation: Lookalike domains used to deceive your customers and partners
Modern email security relies on a set of DNS-based authentication protocols (SPF, DKIM, DMARC) that, when properly configured, significantly reduce these threats.
The Solution
MailShield provides comprehensive monitoring and analysis of your email security configuration:
DNS Security Checks
MailShield continuously monitors your domain's DNS records for:
| Protocol | Purpose |
|---|---|
| SPF | Specifies which mail servers can send email for your domain |
| DKIM | Adds digital signatures to emails to prevent tampering |
| DMARC | Unifies SPF and DKIM with policies and reporting |
| MTA-STS | Enforces TLS encryption for email delivery |
| TLS-RPT | Reports TLS connection failures |
| BIMI | Displays your brand logo in email clients |
| DNSSEC | Adds cryptographic signatures to DNS |
Report Processing
MailShield automatically receives and processes:
- DMARC Aggregate Reports (RUA): Daily summaries from email providers showing authentication results
- DMARC Forensic Reports (RUF): Detailed reports of individual authentication failures
- TLS-RPT Reports: Statistics on TLS connection attempts and failures
Security Scoring
Every domain receives a security score from 0-100 (grades A-F) based on:
- Configuration completeness
- Policy strength (e.g., DMARC enforcement level)
- Best practices compliance
- Key strength and algorithm selection
Alerting
Get notified when:
- Your security score changes significantly
- DNS records are modified
- Authentication failure rates spike
- New reports are received
Who Uses MailShield?
MailShield is designed for:
- IT Administrators managing email infrastructure
- Security Teams monitoring organizational security posture
- MSPs managing email security for multiple clients
- Compliance Officers ensuring email security requirements are met
Next Steps
- Get Started with MailShield
- Learn about Email Security fundamentals
- Explore Features in detail