Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hstern.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 23:17:14 UTC · ↺ Refresh
MX Hostnames
- hstern-com-br.mail.protection.outlook.com
MX Priorities
- hstern-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.69.134 (no PTR)
- 104.26.4.89 (no PTR)
- 104.26.5.89
- 2606:4700:20::681a:559
- 2606:4700:20::ac43:4586
- 2606:4700:20::681a:459
Mail Server IPs
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:f90c:: ↩ mail-sn1pr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
elmo.ns.cloudflare.com dns.cloudflare.com 2398562914 10000 2400 604800 1800
Primary NS (mname)
elmo.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398562914
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
elmo.ns.cloudflare.com
jo.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:200.222.41.130/32 ip4:187.108.47.26/32 ip4:200.201.190.188/32 include:amazonses.com include:spf.protection.outlook.com include:spf.tmes.trendmicro.com include:_spf.rdstation.com.br include:sendgrid.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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 ip4:200.222.41.130/32 ip4:187.108.47.26/32 ip4:200.201.190.188/32 include:amazonses.com include:spf.protection.outlook.com include:spf.tmes.trendmicro.com include:_spf.rdstation.com.br include:sendgrid.net -all
Full email verification for hstern.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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