Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
michaelkatzdmd.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-18 18:15:11 UTC · ↺ Refresh
MX Hostnames
- michaelkatzdmd-com.mail.protection.outlook.com
MX Priorities
- michaelkatzdmd-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.1.89 (no PTR)
- 172.67.128.243 (no PTR)
- 2606:4700:3033::6815:159 (no PTR)
- 2606:4700:3031::ac43:80f3 (no PTR)
Mail Server IPs
No IPs resolved.
SOA Record
Raw SOA
eric.ns.cloudflare.com dns.cloudflare.com 2403786704 10000 2400 604800 1800
Primary NS (mname)
eric.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2403786704
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
pam.ns.cloudflare.com
eric.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
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- google-site-verification=MWPxO0lKpVzIgCv6pLXLrMFO5axcD_1gx64HOUh40WM
- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms25414277
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