gsmpunt.nl

Readiness by lane

Green: gsmpunt.nl. Thin bar: E-Commerce & Marketplaces peer median.

Priority fixes for gsmpunt.nl

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   DMARC policy enforces quarantine or reject

   Observed: The DMARC policy for gsmpunt.nl was p=none, which asks receivers to take no action on failing mail.

   Why it matters: An enforcing DMARC policy helps receiving mail systems reject email that falsely claims to come from your domain, a common route for phishing your customers.

   What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.

   39% of E-Commerce & Marketplaces peers do this. Limit: Read from public DNS at the time of the check; records may have changed since.

   Guide: A Practical Website Health Check for Owners

2. Priority 2 · Accelerate

   HTTP/3 advertised

   Observed: The homepage did not advertise HTTP/3 through an Alt-Svc header.

   What to do: Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.

   47% of E-Commerce & Marketplaces peers do this.

   Guide: CDN Guide for Website Owners

3. Priority 3 · Harden

   Certificate lifetime of 100 days or less

   Observed: The certificate from Sectigo Limited had a 385-day validity period, longer than the 100-day maximum that applies from March 2027.

   What to do: Move to automated issuance and renewal now, while you still have time to test it.

   70% of E-Commerce & Marketplaces peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

4. Priority 4 · Harden

   security.txt published

   Observed: No valid /.well-known/security.txt with a Contact field was returned.

   What to do: Publish /.well-known/security.txt with at least Contact and Expires fields, as RFC 9116 requires, and review it before it expires.

   7.6% of E-Commerce & Marketplaces peers do this.

   Guide: A Practical Website Health Check for Owners

What gsmpunt.nl already does well

Practices fewer than half of E-Commerce & Marketplaces peers use.

• DNSSEC signedDNSSEC delegation (DS record) present.7.7% of peers
• CAA records limit who can issue certificatesCAA limits issuance to letsencrypt.org, sectigo.com.16% of peers
• Referrer-Policy setReferrer-Policy present.20% of peers

What we saw

Homepage checked

https://www.gsmpunt.nl/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

Sectigo, 385-day validity, expiring 2027-02-11

DNS operators

1 self-run or other nameserver domain

HSTS

max-age 730 days, preload

DMARC policy

p=none

Homepage HTML

230 KB, gzip

Images on homepage

121 (png 58, svg 38, webp 19, jpg 5)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

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E-Commerce & Marketplaces readiness benchmark