Postfix Postscreen Tuning

Postfix: Postscreen Tuning Checklist This section captures the recommended postscreen tuning of Postfix by enabling Postfix’s portscreen. Use this guide get rid of bad actors quickly without breaking a sweat. Review and confirm your active configuration. Tuning goals Be strict […]

DMARC

DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that uses SPF and DKIM to verify email senders and prevent spoofing, ensuring that emails are legitimate and from the claimed domain What DMARC Does: DMARC builds on […]