Is simnet.is secure (HTTPS)?

Yes. simnet.is uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 19, 2026.

simnet.is is hosted on BASIS-AS - Sensa ehf, IS.

What is simnet.is's SEO score?

simnet.is scored 65/100 for SEO in the latest analysis (fair).

What is simnet.is's overall website score?

simnet.is has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.

simnet.is

Zimbra Web Client Sign In

Last scanned Jul 26, 2026, 5:18 AM

Overall score

Great

Summary

Zimbra provides open source server and client software for messaging and collaboration. This website uses Nginx hosted on BASIS-AS - Sensa ehf, IS. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores good (80/100) and performance excellent (90/100). Top issue: Missing canonical link.

Zimbra provides open source server and client software for messaging and collaboration. To find out more visit https://www.zimbra.com.

Hosted on BASIS-AS - Sensa ehf, IS

Top issues to fix

9 issues found · 3 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.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
1 cookie without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+3 more issues — details in the sections below.

SEO

5 issue(s) found

Performance

2.04 s

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.

Zimbra provides open source server and client software for messaging and collaboration. To find out more visit https://www.zimbra.com.

Meta tags

Title: Zimbra Web Client Sign In
Description: Zimbra provides open source server and client software for messaging and collaboration. To find out more visit https://www.zimbra.com.
Canonical
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

Hosting provider: BASIS-AS - Sensa ehf, IS
CDN provider: —
IP address: 79.171.98.214
ASN: AS43892 (BASIS-AS - Sensa ehf, IS)

DNS records

Type	Value
A	79.171.98.214
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	simnetmail.vist.is
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: postur.simnet.is
Valid from: Jun 21, 2026
Valid to: Sep 19, 2026
Days until expiry: 55
SAN domains: imap.simnet.is, lenapostur.simnet.is, mail.centrum.is, mail.eldhorn.is, mail.simnet.is, notendur.simnet.is, pop.simnet.is, postur.centrum.is, postur.eldhorn.is, postur.simnet.is, smtp.simnet.is, z-biz.simnet.is

Security headers

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

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 4 external · 1 broken

Images

0 total · 0 missing alt

Scripts / Styles

1 scripts · 1 stylesheets

JS / CSS size

16.1 KB · 63.9 KB

Page size

23.2 KB

Robots.txt & Sitemap

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

SEO issues

Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
sitemap.xml not found

Scan details

Requested URL: https://simnet.is
Final URL: https://postur.simnet.is
HTTP status: 200
HTTP version: HTTP/2
Response time: 2.04 s
HTML size: 23.2 KB
Redirect chain: https://simnet.is → https://postur.simnet.is

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does simnet.is use?: simnet.is is built with Nginx.
Is simnet.is secure (HTTPS)?: Yes. simnet.is uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 19, 2026.
Who hosts simnet.is?: simnet.is is hosted on BASIS-AS - Sensa ehf, IS.
What is simnet.is's SEO score?: simnet.is scored 65/100 for SEO in the latest analysis (fair).
What is simnet.is's overall website score?: simnet.is has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.