Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mroholdings.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 17:12:54 UTC · ↺ Refresh
MX Hostnames
- mroholdings-com.mail.protection.outlook.com
MX Priorities
- mroholdings-com.mail.protection.outlook.com: 0
A / AAAA Records
- 107.180.51.229 ↩ 229.51.180.107.host.secureserver.net
Mail Server IPs
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-37.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-37.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns1-37.azure-dns.com
ns2-37.azure-dns.net
ns3-37.azure-dns.org
ns4-37.azure-dns.info
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.psm.knowbe4.com include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._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
11 records- 1jhffc820dp74mhqm9cns71mqt
- smartsheet-site-validation=JTdmNe2nCcRONMmxmV3aBhNZ6y-H6tNK
- aopspjfdju7mcrmuet6mh1shr7
- ms-domain-verification=fdc3cad9-360e-4172-973a-8dddbfdfc23b
- 0ed1fe018a5b336e929d3b4829887245669f204354
- MS=ms85783814
- NETORGFT1721653.onmicrosoft.com
- nintex.6352e4d4e70cc816a0669bde
- SPFv=spf1 include:_spf.psm.knowbe4.com include:spf.protection.outlook.com -all
- v=verifydomain MS=5181564
- s2qg3ha8uvnspiko1nq1cugr9u
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