penguinlibros.com

Valid Email Server
Domain Lookup › penguinlibros.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
penguinlibros.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-20 22:53:19 UTC · ↺ Refresh

MX Hostnames

  • us-smtp-inbound-2.mimecast.com
  • us-smtp-inbound-1.mimecast.com

MX Priorities

No priority data.

A / AAAA Records

  • 45.223.25.1
  • 45.223.19.1

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns-26.awsdns-03.com
ns-983.awsdns-58.net
ns-1053.awsdns-03.org
ns-2017.awsdns-60.co.uk

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:amazonses.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; aspf=s; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

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

All TXT Records

13 records
  • c0cb2b7j4oio9ai4t0dn5gp08t
  • fdh5voa85tc398go6f00tsipjl
  • globalsign-domain-verification=2BC343CC5B604CB5D79D6252D4614600
  • globalsign-domain-verification=2a3c396aad6e5c57e8568c40501dca5e
  • globalsign-domain-verification=7439B1FF310B92BBFA9EBB9B9D206D1D
  • globalsign-domain-verification=8BD5675959F611BD06FF5B580080D2E3
  • globalsign-domain-verification=9ACE166E6DD393A2110DDFAE14E703D3
  • globalsign-domain-verification=d8688adbe18411ee1a23b704da1e9341
  • rss743nrddb2h0nk1j2o6orhp3
  • SPFv=spf1 include:spf.protection.outlook.com include:amazonses.com -all
  • z6q2n9v.x.incapdns.net
  • MS=ms78140808
  • _globalsign-domain-verification=eLn9AbmqV0XU4dL65zq0HpAvKrN-v78BFbgQ_0feQCMP4EAFS787UI5RVKLPDKH23DIA
Full email verification for penguinlibros.com

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits