Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gerdau.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 09:09:24 UTC · ↺ Refresh
MX Hostnames
- gerdau-com-br.mail.protection.outlook.com
MX Priorities
- gerdau-com-br.mail.protection.outlook.com: 10
A / AAAA Records
- 20.62.78.161 (no PTR)
Mail Server IPs
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.gerdau.com.br postmaster.gerdau.com.br 2026031300 3600 3600 1209600 600
Primary NS (mname)
ns.gerdau.com.br
Admin Email (rname)
postmaster@gerdau.com.br
Serial
2026031300
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
ns.gerdau.com.br
ns2.gerdau.com.br
SPF Record
✓ Strict (-all)
v=spf1 ip4:134.65.230.187/32 ip4:189.42.125.0/24 include:_spf.salesforce.com include:spf.protection.outlook.com include:okta.gerdau.com.br -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- trend-micro-v1-domain-verification.719640adc7b25fa1ae4e728355d24a13=da54deb4-5e01-4742-8af4-b2c1013fde59
- _qqxpzmgvpfsp5e7x54dmnagtmthgc7i
- figma-domain-verification=f0d6f8dfc51c75d4d5e23377044a8a92fae328c7888d29b5dedd0c04ed5fc84d-1752509975
- SPFv=spf1 ip4:134.65.230.187/32 ip4:189.42.125.0/24 include:_spf.salesforce.com include:spf.protection.outlook.com include:okta.gerdau.com.br -all
- atlassian-domain-verification=vpioapYU9mvz/0dwSGxOYbqzC7J8udLsxmmoNjC3CpM64CZ1woV/YiJjMz70GMR+
- google-site-verification=eJunYOQ6V62Fcg8jZY_E-7hsEA3RRy2xqhZXIOG-UMI
- docusign=4a4c94b0-6089-49b1-a89e-08b42d8a3c70
- privacytools-domain-verification=426b16eb795d90c113f736c115d98e295853ee597a2be9b1676c532adac1d0eb
- apple-domain-verification=3FDHSCtYENsgJBvv
- miro-verification=2271257d771366966717e972501b44b06a7b9995
- autodesk-domain-verification=YlRVQekEdM0eGugH3BvE
Full email verification for gerdau.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits