Mail servers

Mail servers
Cyrus
Dovecot

MTA

Message Transfer Agent (MTA)
Postfix configuration
SASL configuration
- Cyrus
  - SMTP
- Dovecot
  - SMTP
- Configuration resources

DNSSEC

Domain Name System Security Extensions (DNSSEC)

TLS

Transport Layer Security (TLS)
- DNS-based Authentication of Named Entities (DANE)
- MTA Strict Transport Security (MTA-STS)
TLS configuration
DANE configuration
- Configuration
  - Multiple domains
- Configuration resources
MTA-STS configuration

SPF

Sender Policy Framework (SPF)
SPF configuration

DKIM

Domain Keys Identified Mail (DKIM)
DKIM configuration
Rspamd configuration
- Configuration resources

DMARC

Domain-based Message Authentication, Reporting and Conformance (DMARC)
DMARC configuration

Smarter mail servers

Smarter mail servers
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Domain-based Message Authentication, Reporting and Conformance (DMARC)

DMARC is designed to protect against direct domain spoofing.

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