Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
una.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 14:35:09 UTC · ↺ Refresh
MX Hostnames
- una-br.mail.protection.outlook.com
MX Priorities
- una-br.mail.protection.outlook.com: 0
A / AAAA Records
- 104.18.11.121 (no PTR)
- 104.18.10.121 (no PTR)
Mail Server IPs
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1447.awsdns-52.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1447.awsdns-52.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1447.awsdns-52.org
ns-2025.awsdns-61.co.uk
ns-460.awsdns-57.com
ns-671.awsdns-19.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com ip4:201.62.252.28 ip4:164.152.36.137 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
10 records- apple-domain-verification=n4LNkk4c4SFtJi7b
- bFEixfYR0Qthupeb2P8vzlYa+3Nc5nQBscjZXVqY/aEWg8J9TTQ7GW/gRxsaBIsGt6i/po2hbVH2oTB99+OG5g==
- google-site-verification=GEAXRFrvSjuRXspfs_WzsIS-dwWaD7W9WWWE53gRhtY
- google-site-verification=SsiXO5U2l0xU8Gmy8n8joeAcKCxP6nYCztTe7tg4Juk
- google-site-verification=upyd22MZX1TsC42sFRdXcznAPVFNMwS5PyS8aX_yu8o
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com ip4:201.62.252.28 ip4:164.152.36.137 -all
- workplace-domain-verification=CzEyqs3bkgueflDk1ouqZjHQ42FqxE
- 8ca07sgeefndad2va2mqqlr5rm
- MS=ms85454112
- amazonses:I40YNvgzqkMB2/zUtYexqEtNTnUV0Gb7jc/ouZ4Ytuw=
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 una.br
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits