What technology does exim.org use?

exim.org is built with jQuery, Nginx.

Is exim.org secure (HTTPS)?

Yes. exim.org uses TLS 1.2 with a certificate issued by Let's Encrypt, valid until Sep 27, 2026.

Hosting provider information for exim.org is not available yet.

What is exim.org's SEO score?

exim.org scored 75/100 for SEO in the latest analysis (fair).

What is exim.org's overall website score?

exim.org has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.

exim.org

Exim Internet Mailer

Last scanned Jul 26, 2026, 11:19 AM

Overall score

Great

Summary

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. This website uses Nginx. SEO is good (75/100) and accessibility is good (85/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

Austria

Top issues to fix

10 issues found · 2 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 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.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.

+4 more issues — details in the sections below.

SEO

4 issue(s) found

100

Performance

129 ms

Security

HTTPS & header checks

Accessibility

1 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.

Organization

Company details published in this site's own structured data.

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

Meta tags

Title: Exim Internet Mailer
Description: Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
Canonical: https://www.exim.org/
Language: en-GB
Charset: UTF-8
Viewport: width=device-width
Robots meta: noodp,noydir,index,follow
Manifest

Technologies

Detected frameworks, languages, and tools.

jQuery Nginx

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: 152.53.204.32
ASN: AS197540 ()

DNS records

Type	Value
A	152.53.204.32
AAAA	2a00:11c0:5f:34c1::2
MX	cumin.exim.org mx2.wizmail.org
TXT	v=spf1 a ip4:37.221.193.62 ip6:2a03:4000:8:637::2 a:hh.schlittermann.de mx ?all cumin
NS	hh.schlittermann.de rip.psg.com rn.schlittermann.de us1ns.pennock-tech.net ns0.firedrake.org nlns.globnix.net pu.schlittermann.de
CAA	0 issue "letsencrypt.org" 0 issuewild ";" 0 iodef "mailto:ssladmin@exim.org"
CNAME	—
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.2
Issuer: Let's Encrypt
Subject: cumin.exim.org
Valid from: Jun 29, 2026
Valid to: Sep 27, 2026
Days until expiry: 60
SAN domains: cumin.exim.org, dev.exim.org, docs.exim.org, downloads.exim.org, exim.org, ftp.exim.org, git.exim.org, lists.exim.org, mta-sts.exim.org, mx.exim.org, openpgpkey.exim.org, people.exim.org, vcs.exim.org, wiki.exim.org, www.exim.org

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 1 · H3 0

Links

11 internal · 11 external · 3 broken

Images

3 total · 1 missing alt

Scripts / Styles

3 scripts · 2 stylesheets

JS / CSS size

92.5 KB · 3.9 KB

Page size

5.3 KB

Robots.txt & Sitemap

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

SEO issues

No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://exim.org
Final URL: https://exim.org
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 129 ms
HTML size: 5.3 KB
Redirect chain: https://exim.org

See something wrong on this report? Request a correction

Frequently asked questions

What technology does exim.org use?: exim.org is built with jQuery, Nginx.
Is exim.org secure (HTTPS)?: Yes. exim.org uses TLS 1.2 with a certificate issued by Let's Encrypt, valid until Sep 27, 2026.
Who hosts exim.org?: Hosting provider information for exim.org is not available yet.
What is exim.org's SEO score?: exim.org scored 75/100 for SEO in the latest analysis (fair).
What is exim.org's overall website score?: exim.org has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.