bestusmlebooks.com

HTML metadata

Technology

Server

Apache

DNS records live

NS

• ns1.deerfieldhosting.net
• ns2.deerfieldhosting.net

MX

• 1 aspmx.l.google.com
• 10 alt3.aspmx.l.google.com
• 10 alt4.aspmx.l.google.com
• 5 alt1.aspmx.l.google.com
• 5 alt2.aspmx.l.google.com

Verified for

• Google

Email authentication strong

SPF

v=spf1 +a +mx +ip4:144.217.113.137 +ip4:144.217.113.138 +include:_spf.google.com ~all

softfail (~all)

DMARC

v=DMARC1;p=quarantine;sp=reject;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400;rua=mailto:ceo@bestusmlebooks.com

policy: quarantine · sp=reject

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://bestusmlebooks.com/

findings

• missing HSTS
• missing Content Security Policy
• missing frame protection
• missing content type protection
• missing Referrer Policy
• missing Permissions Policy

Linked from (3)

• futuredoctor.net×2
• gold-standard.com×2
• bestmcatbooks.com×1