Knowledge Hub
Knowledge Hub
Practical guidance for teams running Mimecast in the real world. From best-practice implementation and configuration drift, to DMARC, MTA-STS and migrations — this is where you'll find clear steps, checks and decision support.
Quick Answers
What is the Knowledge Hub?
A library of short, practical guides and tools to help you implement, optimise and manage secure email — especially in Mimecast environments.
Where should I start?
- If you're unsure whether email authentication is "good enough", start with DMARC and SPF.
- If you're tightening inbound TLS enforcement, start with MTA-STS and TLS-RPT.
- If your configuration has drifted over time, start with Service Optimisation.
What do you cover?
DMARC, SPF, DKIM, MTA-STS, TLS-RPT, mail flow and routing models, Mimecast configuration patterns, migrations/exports, and decommissioning planning.
Featured Guides
MTA-STS Implementation Guide
Step-by-step guide to implementing MTA-STS for your domain.
Email Security Best Practices
Essential practices to protect your organisation's email infrastructure.
Azure Static Web Apps MTA-STS Guide
How to host your MTA-STS policy securely using Microsoft Azure Static Web Apps.
GitHub Pages MTA-STS Guide
Free and secure hosting for your MTA-STS policy using GitHub Pages.
Audit Admin Access in Mimecast
Why former employees still have admin access and how to fix it. Practical steps and best practices.
Browse by Topic
Email authentication (DMARC / SPF / DKIM)
Make your authentication posture measurable, enforceable, and easier to maintain.
Transport security (MTA-STS / TLS-RPT)
Move from "best effort TLS" to policy-driven enforcement with reporting.
Mimecast implementation
Build a best-practice setup that fits your routing model and operating reality.
Mimecast optimisation
Fix drift, reduce noise, and align policies to what the business actually needs.
Migrations & exports
Plan migrations and archive exports without slowing the business down.
Decommissioning & transitions
Exit Mimecast cleanly, keep evidence intact, and avoid email delivery surprises.
Latest Updates
If you'd rather have help
Prefer a second pair of eyes? We can review your configuration and give you a clear, prioritised plan.
Glossary
Need help with your email security?
Book a consultation with our team to discuss your specific requirements and get expert guidance.
Book a Consultation