Resource
Useful resource links
Help and information
- DMARC (Wikipedia)
- Enhanced email protection with DKIM and DMARC in Office 365
- Use DKIM to validate outbound email sent from your custom domain in Office 365
- DKIM and DMARC for On premise Exchange Setup
- Implementing DMARC and managing aggregate reports
- SPF (Wikipedia)
- DKIM (Wikipedia)
- DMARC at dmarc.org
- Prevent outgoing spam with DMARC (Google)