big.pt

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

Domain Overview

DNS: ⚡ live Checker: ⚡ live
big.pt
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-21 08:03:46 UTC · ↺ Refresh

MX Hostnames

  • big-pt.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 62.28.10.41

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns4.big.pt
ns.big.pt
ns3.big.pt

SPF Record

✓ Strict (-all)
v=spf1 include:spf.big.pt include:spf.protection.outlook.com include:amazonses.com include:_spf.salesforce.com include:_spf.google.com include:saxobank.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

9 records
  • SPFv=spf1 include:spf.big.pt include:spf.protection.outlook.com include:amazonses.com include:_spf.salesforce.com include:_spf.google.com include:saxobank.com -all
  • WYLi8Ujv0vlYpEPOUmF0rFGEJKK2pBOcydtL8hgiF3c=
  • mtc=YTU5YmFhOGUtMmI2OS00NmM0LWFjZTAtMjZjZjZmY2NlYzdh
  • oYujeus/wjUp89RtOYfFtm9aXV5+DGDplwxBuGvFJR0=
  • MS=CC759AA44D5EBFF4055D83273392D3FBF76E6953
  • apple-domain-verification=AdNzhrEfXQkNxP43
  • _af3zrhs3w7bp37pei9rvrhowd5asmnk
  • _eb6dpg1p5z3tuetycianemjsbbcm3xh
  • google-site-verification=4qWkgWR8drldB2N30blw56Wq6wNTfaIhdevpb-yHqGw
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for big.pt

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits