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SGSiteGraph

postfix.org

The Postfix Home Page

Last scanned Jul 26, 2026, 5:17 AM · 3 views

78

Overall score

Fair

Summary

This website uses Nginx hosted on HETZNER-AS - Hetzner Online GmbH, DE. SEO is fair (65/100) and accessibility is good (85/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

Germany
Hosted on HETZNER-AS - Hetzner Online GmbH, DE

Top issues to fix

11 issues found · 4 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

+5 more issues — details in the sections below.

65

SEO

5 issue(s) found

100

Performance

298 ms

65

Security

HTTPS & header checks

85

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Meta tags

Title
The Postfix Home Page
Description
Canonical
Language
Charset
us-ascii
Viewport
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

CDN provider
—
IP address
95.216.145.1
ASN
AS24940 (HETZNER-AS - Hetzner Online GmbH, DE)

DNS records

TypeValue
A
  • 95.216.145.1
AAAA
  • 2a01:4f9:c010:8fb::bee
MX—
TXT—
NS—
CAA—
CNAME
  • postfix-mirror.horus-it.com
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
postfix.org
Valid from
Jun 16, 2026
Valid to
Sep 14, 2026
Days until expiry
49
SAN domains
postfix.org, www.postfix.co.uk, www.postfix.com, www.postfix.net, www.postfix.org, www.postfix.org.uk

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 1 · H3 0

Links

11 internal · 3 external · 0 broken

Images

1 total · 0 missing alt

Scripts / Styles

0 scripts · 1 stylesheets

JS / CSS size

0 B · 1.9 KB

Page size

5.6 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • Missing canonical link
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

  • Missing <html lang> attribute
  • Missing viewport meta tag

Scan details

Requested URL
https://postfix.org
Final URL
https://www.postfix.org/
HTTP status
200
HTTP version
HTTP/2
Response time
298 ms
HTML size
5.6 KB
Redirect chain
https://postfix.org → https://www.postfix.org/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does postfix.org use?
postfix.org is built with Nginx.
Is postfix.org secure (HTTPS)?
Yes. postfix.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 14, 2026.
Who hosts postfix.org?
postfix.org is hosted on HETZNER-AS - Hetzner Online GmbH, DE.
What is postfix.org's SEO score?
postfix.org scored 65/100 for SEO in the latest analysis (fair).
What is postfix.org's overall website score?
postfix.org has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.