Mailgun · Domain Security

Mailgun Domain Security

Domain security

Domain security posture for Mailgun, probed live across 3 host(s) and 2 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

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Transport & Host Security

www.mailgun.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 25 07:03:07 2026 GMT
documentation.mailgun.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 9 13:38:27 2026 GMT
api.mailgun.net
HTTPS: yes · TLS: TLSv1.2 · HSTS: yes · cert expires: Sep 8 23:59:59 2026 GMT

Domain (DNS/Email) Security

mailgun.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none
mailgun.net
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.mailgun.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 25 07:03:07 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: documentation.mailgun.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct  9 13:38:27 2026 GMT
  hsts: false
- host: api.mailgun.net
  https: true
  tls_version: TLSv1.2
  cert_expires: Sep  8 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 63072000
domains:
- domain: mailgun.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: mailgun.net
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject