christophercobb.com

Valid Email Server
Domain Lookup › christophercobb.com

Domain Overview

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

Checked via [email protected] · 2026-04-02 06:41:54 UTC · ↺ Refresh

MX Hostnames

  • christophercobb-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 104.16.160.240 (no PTR)
  • 104.16.161.240 (no PTR)

Mail Server IPs

  • 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
  • 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
  • 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
  • 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com

SOA Record

Raw SOA duke.ns.cloudflare.com dns.cloudflare.com 2399278889 10000 2400 604800 1800
Primary NS (mname)
duke.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399278889
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

rose.ns.cloudflare.com
duke.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ DKIM properly configured for selector: google

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • google-site-verification=-rBiRZNDcALETAry18atswwAh7rFBu7HlZZUKgUvLLM
  • google-site-verification=wnY0c6KNVNC6F9yhEbQ_TTG37FHV6wYgXwm7CLupQpc
Full email verification for christophercobb.com

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