Domain report
sendmail.com
sendmail.com ranks in the top 0.019% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 5 distinct hosts observed under it.
Connectivity
- Top percentile
- 0.019%
- Hosts observed
- 5
From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means
HTTPS reachability
https://sendmail.com/ answered with HTTP 200.
DNS records
- A
- 192.230.66.135
- 192.230.74.135
- AAAA
- No records found.
- MX
- 10 mxa-00148501.gslb.pphosted.com.
- 10 mxb-00148501.gslb.pphosted.com.
- NS
- ns1.proofpoint.com.
- ns3.proofpoint.com.
- pdns99.ultradns.biz.
- pdns99.ultradns.com.
- pdns99.ultradns.net.
- pdns99.ultradns.org.
Live preview
This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.
Since sendmail.com can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.
Domain registration (WHOIS / RDAP)
RDAP lookup failed (HTTP 429).
SSL certificate
Certificate Transparency lookup failed (HTTP 429).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html; charset=UTF-8
- Cache-Control
- max-age=0
- Content-Encoding
- Not sent
Security
- Content-Security-Policy
- Not sent
- Strict-Transport-Security
- max-age=31536000, includeSubDomains, preload
- X-Frame-Options
- SAMEORIGIN
- X-Content-Type-Options
- nosniff
- Referrer-Policy
- origin-when-cross-origin
- Permissions-Policy
- Not sent
Redirect chain
- 1.
http://sendmail.com/HTTP 301→ https://sendmail.com/
- 2.
https://sendmail.com/HTTP 301→ https://www.proofpoint.com/
- 3.
https://www.proofpoint.com/HTTP 301→ https://www.proofpoint.com/us
- 4.
https://www.proofpoint.com/usHTTP 200
Meta tags
- Title
- Enterprise Cybersecurity Solutions, Services & Training | Proofpoint US
- Description
- Proofpoint helps protect people, data and brands against cyber attacks. Offering compliance and cybersecurity solutions for email, web, cloud, and more.
- Canonical
- https://www.proofpoint.com/us
- Robots
- Not set
- Generator
- Not set
- Open Graph title
- Enterprise Cybersecurity Solutions, Services & Training | Proofpoint US
- Open Graph description
- Proofpoint helps protect people, data and brands against cyber attacks. Offering compliance and cybersecurity solutions for email, web, cloud, and more.
- Open Graph image
- https://www.proofpoint.com/sites/default/files/styles/metatag/public/vx-hero/protect-people-data-ai-enterprise-security.png.webp?itok=r-Rhc7at
- Open Graph type
- website
- Twitter card
- summary_large_image
- Twitter title
- Enterprise Cybersecurity Solutions, Services & Training | Proofpoint US
- Twitter image
- https://www.proofpoint.com/sites/default/files/styles/metatag/public/vx-hero/protect-people-data-ai-enterprise-security.png.webp?itok=r-Rhc7at
robots.txt
- Disallow rules (User-agent: *)
- 1228
- Disallow rules (other agents)
- 5
Sitemaps declared:
https://www.proofpoint.com/us/sitemap.xmlhttps://www.proofpoint.com/uk/sitemap.xmlhttps://www.proofpoint.com/fr/sitemap.xmlhttps://www.proofpoint.com/de/sitemap.xmlhttps://www.proofpoint.com/es/sitemap.xmlhttps://www.proofpoint.com/jp/sitemap.xmlhttps://www.proofpoint.com/au/sitemap.xmlhttps://www.proofpoint.com/it/sitemap.xmlhttps://www.proofpoint.com/br/sitemap.xmlhttps://www.proofpoint.com/kr/sitemap.xml
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.