Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
clevelandcliffs.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-19 07:18:28 UTC · ↺ Refresh
MX Hostnames
- clevelandcliffs-com.mail.protection.outlook.com
MX Priorities
- clevelandcliffs-com.mail.protection.outlook.com: 0
A / AAAA Records
- 174.129.30.187 ↩ ec2-174-129-30-187.compute-1.amazonaws.com
Mail Server IPs
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-02.azure-dns.com hostmaster.ns1.cliffsnr.com 2020113004 10800 3600 604800 86400
Primary NS (mname)
ns1-02.azure-dns.com
Admin Email (rname)
hostmaster@ns1.cliffsnr.com
Serial
2020113004
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns3-02.azure-dns.org
ns4-02.azure-dns.info
ns1-02.azure-dns.com
ns2-02.azure-dns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 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
6 records- 104.45.129.178,40.71.11.148
- anthropic-domain-verification-js9p0h=rnoCmjkz2ubTkN4FBVihXcoNc
- MS=ms47909807
- SPFv=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
- atlassian-domain-verification=HneJVdVwQuaaaDFaVEPHOrTlupQFO6Ao99wa4KFt4LdV8RJPrJN4A0gtHuovFeD6
- google-site-verification=rh1sfrJu2FPEpB2m-nrco14NhrOqKZgTEePcPDTaZRk
Full email verification for clevelandcliffs.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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