offensive-security.com

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
offensive-security.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-30 02:02:56 UTC · ↺ Refresh

MX Hostnames

  • ASPMX.L.GOOGLE.com
  • ALT4.ASPMX.L.GOOGLE.com
  • ALT3.ASPMX.L.GOOGLE.com
  • ALT2.ASPMX.L.GOOGLE.com
  • ALT1.ASPMX.L.GOOGLE.com

MX Priorities

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

A / AAAA Records

  • 192.124.249.5

Mail Server IPs

  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 142.251.167.27 ↩ ww-in-f27.1e100.net
  • 2607:f8b0:4004:c08::1b ↩ bi-in-f27.1e100.net
  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)

SOA Record

Raw SOA ns1.gandi.net hostmaster.gandi.net 1774483200 10800 3600 604800 10800
Primary NS (mname)
ns1.gandi.net
Admin Email (rname)
hostmaster@gandi.net
Serial
1774483200
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s

Nameservers (NS)

ns-34-a.gandi.net
ns-182-b.gandi.net
ns-185-c.gandi.net

SPF Record

✓ Strict (-all)
v=spf1 ip4:54.84.169.62 include:sendgrid.net include:_spf.salesforce.com include:_spf.google.com include:_external_spf.offsec.com include:5852453.spf02.hubspotemail.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=s; aspf=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine

DKIM Selectors

✓ 4 found
google._domainkey
dkim._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

7 records
  • have-i-been-pwned-verification=60f09bd2651deea7ae81a0920f4b750d
  • atlassian-domain-verification=ApdEbmai7KmHo/WS12XIcDtaZrNg28MJ6rN4S7dFbPBqKZd7mpjOQbcCkfa/txm3
  • apple-domain-verification=vqNzKqtyTbMzlRkf
  • 1password-site-verification=7U77TBNLUVEUJAB6NNRME527QI
  • google-site-verification=fMiXc31iHNFO0TAdZ4C_S3Aa1ygs-9_g0wbpzPfkF1c
  • Mosyle-verification-1733523063
  • SPFv=spf1 ip4:54.84.169.62 include:sendgrid.net include:_spf.salesforce.com include:_spf.google.com include:_external_spf.offsec.com include:5852453.spf02.hubspotemail.net -all
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