Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
costonshea.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 00:02:07 UTC · ↺ Refresh
MX Hostnames
- costonshea-com.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
- 54.164.9.107
- 54.85.200.131
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
pdns01.domaincontrol.com
pdns02.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:_spf.sjrollins.com include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
3 records- MS=ms63977397
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:_spf.sjrollins.com include:_spf.psm.knowbe4.com -all
- knowbe4-site-verification=a984930f39e48044f2ca8cfd98b8a97c
Full email verification for costonshea.com
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