Domain Overview
DNS: ✓ 1d ago
Checker: ✓ 1d ago
dupatri.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 03:57:29 UTC · ↺ Refresh
MX Hostnames
- dupatri-com-br.mail.protection.outlook.com
MX Priorities
- dupatri-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.81.124 (no PTR)
- 172.67.161.28 (no PTR)
- 2606:4700:3034::6815:517c
- 2606:4700:3032::ac43:a11c
Mail Server IPs
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
lars.ns.cloudflare.com dns.cloudflare.com 2403205068 10000 2400 604800 1800
Primary NS (mname)
lars.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2403205068
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lars.ns.cloudflare.com
savanna.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; pct=0; adkim=r; aspf=r; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
⚠ Policy applies to 0% of failing messages only
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
1 record- SPFv=spf1 include:spf.protection.outlook.com -all
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 dupatri.com.br
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits