Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
holtzmancorp.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 11:22:03 UTC · ↺ Refresh
MX Hostnames
- holtzmancorp-com.mail.protection.outlook.com
MX Priorities
- holtzmancorp-com.mail.protection.outlook.com: 5
A / AAAA Records
- 45.32.215.229 ↩ 45.32.215.229.vultrusercontent.com
Mail Server IPs
- 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns39.domaincontrol.com dns.jomax.net 2026020500 28800 7200 604800 600
Primary NS (mname)
ns39.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026020500
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns40.domaincontrol.com
ns39.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 +a +mx ip4:4.16.241.182 ip4:199.247.50.21 ip4:204.111.105.18 ip4:216.35.170.0/23 ip4:64.73.126.0/23 ip4:216.17.76.108 ip4:216.109.223.213 include:spf.protection.outlook.com include:_spf.safewebservices.com -all
📊 DNS lookups: 4/10
✓ 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
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- google-site-verification=OAoI5GY-cOqNltjWygbZMvggmVcyor3XunU4v0lu9Zk
- 16va26ppedhiu3jl4e4fuq4iot
- Z24gHkNN _domainkey.holtzmancorp.com. TXT o=- default._domainkey.holtzmancorp.com. TXT p=MHwwDQYJKoZIhvcNAQEBBQADawAwaAJhAJ+aDwgTfsc3E+N0/2F9JQxgS2+g3Zjpxp3zxmy2MVLe2lmtnG1BwzHsYNeqkI3JJrdkvmQFNTs18+CN7FAewvxM2gUhCTKyMb3RnVmawORRxrLvPg3ipqsM3WGXqUBLeQIDAQAB;
- SPFv=spf1 +a +mx ip4:4.16.241.182 ip4:199.247.50.21 ip4:204.111.105.18 ip4:216.35.170.0/23 ip4:64.73.126.0/23 ip4:216.17.76.108 ip4:216.109.223.213 include:spf.protection.outlook.com include:_spf.safewebservices.com -all
- MS=ms47344616
- afhc5810dsm8cf7riu7up7uqm
- MS=ms26207948
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