Entregabilidade de E-mails
Ferramentas de testes
- https://mxtoolbox.com/emailhealth
- https://www.mail-tester.com/
- https://www.emaillistverify.com/dns-health-checker
- https://dnschecker.org/domain-health-checker.php
SPF
DKIM
DMARC
- What is DMARC?
- Increase security for forged spam with DMARC - o mais completo
- Mailgun: Implementing DMARC: A step-by-step
- Subdomains: How DMARC Works With Subdomains?