Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gerdaucorsa.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 13:48:40 UTC · ↺ Refresh
MX Hostnames
- gerdaucorsa-com.mail.protection.outlook.com
MX Priorities
- gerdaucorsa-com.mail.protection.outlook.com: 10
A / AAAA Records
- 52.167.17.55 (no PTR)
Mail Server IPs
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.11.9 ↩ mail-sn1pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.gerdau.com.br hostmaster.e-gerdau.com.br 2025042400 14400 3600 2678400 600
Primary NS (mname)
ns.gerdau.com.br
Admin Email (rname)
hostmaster@e-gerdau.com.br
Serial
2025042400
Refresh
14400s
Retry
3600s
Expire
2678400s
Minimum TTL
600s
Nameservers (NS)
ns.gerdau.com.br
ns2.gerdau.com.br
SPF Record
✓ Strict (-all)
v=spf1 ip4:189.42.125.0/24 include:nets1.spf.messagelabs.com include:nets2.spf.messagelabs.com include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
3 records- MS=ms81008211
- SPFv=spf1 ip4:189.42.125.0/24 include:nets1.spf.messagelabs.com include:nets2.spf.messagelabs.com include:spf.protection.outlook.com -all
- 5ip0EUAkl8hMf0BVBme4LecJCwRmw06+zcIq5YJWI4XjTfP1IhnkOntMocTShijOBJTVYufHIB/WFH3x28id/Q==
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