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nostarch.com

Checked 2026-10-22 10:03 UTC · first added 2026-10-21

✗Problems found Score 84 of 100

Domain & DNS

warn

29 passed 1 warn 0 failed

Areas

iRegistration iDelegation !Nameservers ✓SOA iDNSSEC ✓Records

Problems

!

Software version disclosed

Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: chan.ns.cloudflare.com: "2026.10.2"; rodney.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.

#17

Recent checks

!

Full report

Domain & DNS report for nostarch.com ›

Mail

fail

30 passed 1 warn 1 failed

Areas

✓SPF ✓DMARC ✓DKIM ✓DNSSEC ✓MX ✗TLS iBIMI

Problems

✗

Policy not reachable

TLS · The MTA-STS record exists but the policy could not be fetched, so senders ignore MTA-STS: https://mta-sts.nostarch.com/.well-known/mta-sts.txt returned HTTP 403.

#33
!

Not configured

TLS · MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".

#35

Recent checks

✗

Full report

Mail report for nostarch.com ›