clarkschaefer.com

Valid Email Server
Domain Lookup › clarkschaefer.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
clarkschaefer.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-19 03:28:12 UTC · ↺ Refresh

MX Hostnames

  • clarkschaefer-com.mail.protection.outlook.com

MX Priorities

  • clarkschaefer-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 172.67.180.16 (no PTR)
  • 104.21.96.123 (no PTR)
  • 2606:4700:3037::6815:607b
  • 2606:4700:3034::ac43:b410

Mail Server IPs

  • 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
  • 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
  • 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
  • 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
  • 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com

SOA Record

Raw SOA lola.ns.cloudflare.com dns.cloudflare.com 2398729166 10000 2400 604800 1800
Primary NS (mname)
lola.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398729166
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

oswald.ns.cloudflare.com
lola.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:303912.spf05.hubspotemail.net ip4:149.20.198.30 ip4:149.20.199.27 ip4:149.20.202.51 ip4:167.68.0.1/16 ip4:107.20.210.250 ip4:52.1.14.157 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

8 records
  • 0ed1fe018a1abe9f0ba98f45ec9e850f3297e8d219
  • anthropic-domain-verification-29ahm2=8V4HOcAEjdQ9LKSK9Hg1ILAue
  • docusign=f58e57d3-b1ff-4128-bd94-873b818c29c2
  • google-site-verification=3BHcLJxIkXeJJxS_rqXHUw0taBOsaFYD-iqSSRJLps4
  • q9k7huqct70frnvl8vua62no8g
  • rrlv43ef9fluqeh5p40ebuv7p2
  • SPFv=spf1 include:spf.protection.outlook.com include:sendgrid.net include:303912.spf05.hubspotemail.net ip4:149.20.198.30 ip4:149.20.199.27 ip4:149.20.202.51 ip4:167.68.0.1/16 ip4:107.20.210.250 ip4:52.1.14.157 -all
  • v=verifydomain MS=5844396
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