Dropbox Sign · Domain Security

Dropbox Sign Domain Security

Domain security

Domain security posture for Dropbox Sign, probed live across 3 host(s) and 2 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 1 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

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Transport & Host Security

sign.dropbox.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Dec 10 23:59:59 2026 GMT
developers.hellosign.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 14 13:08:55 2026 GMT
api.hellosign.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 14 23:59:59 2026 GMT

Domain (DNS/Email) Security

dropbox.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: yes
hellosign.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: yes

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: sign.dropbox.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Dec 10 23:59:59 2026 GMT
  hsts: false
- host: developers.hellosign.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 14 13:08:55 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: api.hellosign.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct 14 23:59:59 2026 GMT
  hsts: null
domains:
- domain: dropbox.com
  dnssec: false
  caa:
  - 0 issue "digicert.com"
  - 0 issue "letsencrypt.org;validationmethods=dns-01;accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/2079416047"
  - 0 issue "amazonaws.com"
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: hellosign.com
  dnssec: false
  caa:
  - 0 issue "digicert.com"
  - 0 issue "letsencrypt.org;validationmethods=dns-01;accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/2079416047"
  - 0 issue "amazonaws.com"
  spf: true
  dmarc: true
  dmarc_policy: reject