Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
liebermanresearch.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 09:34:36 UTC · ↺ Refresh
MX Hostnames
- liebermanresearch-com.mail.protection.outlook.com
MX Priorities
- liebermanresearch-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.11 (no PTR)
- 141.193.213.10 (no PTR)
Mail Server IPs
- 52.101.10.8 ↩ mail-bn1pr04cu00100.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-03.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-03.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2-03.azure-dns.net
ns3-03.azure-dns.org
ns4-03.azure-dns.info
ns1-03.azure-dns.com
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:96.56.172.91/32 ip4:47.21.79.240/28 ip4:47.19.130.64/28 ip4:47.19.74.200/29 ip4:72.3.137.170 ip4:72.3.137.166 ip4:72.3.137.172 ip4:72.3.137.175 ip4:71.183.215.5 ip4:72.32.177.42 include:spf.protection.outlook.com include:spf.UAE.exclaimer.net include:spf.constantcontact.com include:sendgrid.net include:relay.mailchannels.net include:spfa.cpmails.com -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- google-site-verification=GpAX2GlJE0GXIqXqXdtDbWZGFgyUfRhOndCWvng0Mts
- 3zb8x17zr7r0xqns4r2kf9677dnxrz2g
- _cf-custom-hostname.trust.liebermanresearch.com
- 92e42b8c-8fc7-4ed0-8f31-b183a5a41320
- yybw62t5yk3xctn30tc45zfh4f83m7pl
- _ny639ccydqa1gvnsztl467gism5lxav
- SPFv=spf1 mx a ip4:96.56.172.91/32 ip4:47.21.79.240/28 ip4:47.19.130.64/28 ip4:47.19.74.200/29 ip4:72.3.137.170 ip4:72.3.137.166 ip4:72.3.137.172 ip4:72.3.137.175 ip4:71.183.215.5 ip4:72.32.177.42 include:spf.protection.outlook.com include:spf.UAE.exclaimer.net include:spf.constantcontact.com include:sendgrid.net include:relay.mailchannels.net include:spfa.cpmails.com -all
- MS=ms50885900
Full email verification for liebermanresearch.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits