Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
langfirm.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 08:43:27 UTC · ↺ Refresh
MX Hostnames
- langfirm-com.mail.protection.outlook.com
MX Priorities
- langfirm-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.16.109.239 (no PTR)
- 104.16.111.239 (no PTR)
- 104.16.110.239
- 104.16.112.239
- 104.16.108.239
Mail Server IPs
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
lex.ns.cloudflare.com dns.cloudflare.com 2398664547 10000 2400 604800 1800
Primary NS (mname)
lex.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398664547
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
lex.ns.cloudflare.com
nora.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:71.78.54.18 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
2 records- apple-domain-verification=I5z6ZoXLndwbeEwl
- SPFv=spf1 ip4:71.78.54.18 include:spf.protection.outlook.com -all
Full email verification for langfirm.com
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