Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
martinbros.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:30:07 UTC · ↺ Refresh
MX Hostnames
- martinbros-com.mail.protection.outlook.com
MX Priorities
- martinbros-com.mail.protection.outlook.com: 0
A / AAAA Records
- 52.85.31.22 ↩ server-52-85-31-22.jfk50.r.cloudfront.net
- 52.85.31.115 ↩ server-52-85-31-115.jfk50.r.cloudfront.net
- 52.85.31.82
- 52.85.31.90
- 2600:9000:2026:7a00:8:ea86:aa80:93a1
- 2600:9000:2026:aa00:8:ea86:aa80:93a1
- 2600:9000:2026:3a00:8:ea86:aa80:93a1
- 2600:9000:2026:ce00:8:ea86:aa80:93a1
- 2600:9000:2026:1600:8:ea86:aa80:93a1
- 2600:9000:2026:f200:8:ea86:aa80:93a1
- 2600:9000:2026:6800:8:ea86:aa80:93a1
- 2600:9000:2026:6200:8:ea86:aa80:93a1
Mail Server IPs
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
- 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1139.awsdns-14.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1139.awsdns-14.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-420.awsdns-52.com
ns-739.awsdns-28.net
ns-1139.awsdns-14.org
ns-1743.awsdns-25.co.uk
SPF Record
✓ Strict (-all)
v=spf1 a include:spf.protection.outlook.com include:amazonses.com include:302017.spf03.hubspotemail.net include:cmail1.com include:mailgun.org include:spf.mandrillapp.com include:etraininglibrary.com include:spf_c.oraclecloud.com -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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
1 record- SPFv=spf1 a include:spf.protection.outlook.com include:amazonses.com include:302017.spf03.hubspotemail.net include:cmail1.com include:mailgun.org include:spf.mandrillapp.com include:etraininglibrary.com include:spf_c.oraclecloud.com -all
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