Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
holdthyssen.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 18:36:36 UTC · ↺ Refresh
MX Hostnames
- holdthyssen-com.mail.protection.outlook.com
MX Priorities
- holdthyssen-com.mail.protection.outlook.com: 0
A / AAAA Records
- 67.222.25.22 (no PTR)
Mail Server IPs
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
- 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
cp1.privatesystems.net noc.privatesystems.net 2026031002 3600 1800 1209600 86400
Primary NS (mname)
cp1.privatesystems.net
Admin Email (rname)
noc@privatesystems.net
Serial
2026031002
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
cp2.privatesystems.net
cp3.privatesystems.net
cp1.privatesystems.net
cp4.privatesystems.net
SPF Record
✓ Strict (-all)
v=spf1 mx include:asp-spf1.yardi.com include:asp-spf2.yardi.com include:spf.surveymonkey.com include:spf.protection.outlook.com include:other-spf1.yardi.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
default._domainkey
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx include:asp-spf1.yardi.com include:asp-spf2.yardi.com include:spf.surveymonkey.com include:spf.protection.outlook.com include:other-spf1.yardi.com -all
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