Postfix · Domain Security

Postfix Domain Security

Domain security

Domain security posture for Postfix, probed live across 1 host(s) and 1 registrable domain(s). 1 host(s) serve HTTPS (up to TLSv1.3); 0 advertise HSTS. Email/DNS controls: DNSSEC present, SPF present, DMARC absent.

EmailMail ServerMTASMTPOpen SourceInfrastructure

Transport & Host Security

www.postfix.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 14 03:46:30 2026 GMT

Domain (DNS/Email) Security

postfix.org
DNSSEC: yes · SPF: yes · DMARC: no · CAA: none

Source

Domain Security

postfix-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.postfix.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 14 03:46:30 2026 GMT
  hsts: false
domains:
- domain: postfix.org
  dnssec: true
  caa: []
  spf: true
  dmarc: false