sendmail.org
Sendmail Sentrion Open Source - Open Source Email Server | Proofpoint US
Last scanned Jul 26, 2026, 11:19 AM
Overall score
Great
Summary
Learn how the sendmail Sentrion platform helps organizations that are using open source for large complex environments and need an enterprise platform that will enable a messaging roadmap. This website uses Drupal hosted on INCAPSULA - Incapsula Inc, US. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance good (75/100). Top issue: Title longer than 60 characters.
Learn how the sendmail Sentrion platform helps organizations that are using open source for large complex environments and need an enterprise platform that will enable a messaging roadmap.
- United States
- Hosted on INCAPSULA - Incapsula Inc, US
Top issues to fix
4 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
SEO
2 issue(s) found
Performance
231 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Learn how the sendmail Sentrion platform helps organizations that are using open source for large complex environments and need an enterprise platform that will enable a messaging roadmap.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Sendmail Sentrion Open Source - Open Source Email Server | Proofpoint US
- Description
- Learn how the sendmail Sentrion platform helps organizations that are using open source for large complex environments and need an enterprise platform that will enable a messaging roadmap.
- Canonical
- https://www.proofpoint.com/us/products/email-protection/open-source-email-solution
- Language
- en-us
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- INCAPSULA - Incapsula Inc, US
- CDN provider
- —
- IP address
- 45.60.159.207
- ASN
- AS19551 (INCAPSULA - Incapsula Inc, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Sectigo Limited
- Subject
- www.proofpoint.com
- Valid from
- Jun 15, 2026
- Valid to
- Dec 27, 2026
- Days until expiry
- 152
- SAN domains
- www.proofpoint.com, abaca.com, blog.proofpoint.com, brand.proofpoint.com, dev11.proofpoint.com, emergingthreats.net, emergingthreatspro.com, essentials.proofpoint.com, fortiva.com, insiderthreatmanagement.com, ipcheck.proofpoint.com, ipchecktest.proofpoint.com, jira.proofpoint.com, mobiledefense.proofpoint.com, netcitadel.com, nexgate.com, proofpoint.co.jp, proofpoint.co.uk, proofpoint.com, proofpoint.com.au, proofpoint.com.br, proofpoint.com.es, proofpoint.de, proofpoint.es, proofpoint.fr, proofpoint.it, proofpoint.jp, proofpoint.mx, proofpoint.uk, proofpoint.uk.com, proofpointessentials.com, proofpointprotect.proofpoint.com, sendmail.com, sigaba.com, stopemailfraud.proofpoint.com, translate.proofpoint.com, wiki.proofpoint.com, www.abaca.com, www.emergingthreats.net, www.emergingthreatspro.com, www.fortiva.com, www.netcitadel.com, www.nexgate.com, www.proofpoint.co.jp, www.proofpoint.co.uk, www.proofpoint.com.au, www.proofpoint.com.br, www.proofpoint.com.es, www.proofpoint.de, www.proofpoint.es, www.proofpoint.fr, www.proofpoint.it, www.proofpoint.jp, www.proofpoint.mx, www.proofpoint.uk, www.proofpoint.uk.com, www.proofpointessentials.com, www.sendmail.com, www.sigaba.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 1 · H2 20 · H3 2
Links
129 internal · 22 external · 0 broken
Images
5 total · 0 missing alt
Scripts / Styles
15 scripts · 2 stylesheets
JS / CSS size
2.1 MB · 18.3 MB
Page size
179 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 1163
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Title longer than 60 characters
- Meta description longer than 160 characters
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Team
People listed on this site's own team or about page.
Scan details
- Requested URL
- https://sendmail.org
- Final URL
- https://www.proofpoint.com/us/products/email-protection/open-source-email-solution
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 228 ms
- HTML size
- 179 KB
- Redirect chain
- https://sendmail.org → https://www.proofpoint.com/us/sendmail-open-source/ → https://www.proofpoint.com/us/products/open-source-email-solution → https://www.proofpoint.com/us/products/email-protection/open-source-email-solution
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Frequently asked questions
- What technology does sendmail.org use?
- sendmail.org is built with Drupal, Google Ads.
- Is sendmail.org secure (HTTPS)?
- Yes. sendmail.org uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Dec 27, 2026.
- Who hosts sendmail.org?
- sendmail.org is hosted on INCAPSULA - Incapsula Inc, US.
- What is sendmail.org's SEO score?
- sendmail.org scored 90/100 for SEO in the latest analysis (excellent).
- What is sendmail.org's overall website score?
- sendmail.org has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
- Is sendmail.org hiring?
- sendmail.org has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card