Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
castlebri.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 21:28:42 UTC · ↺ Refresh
MX Hostnames
- castlebri-com.mail.protection.outlook.com
MX Priorities
- castlebri-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.197.55.206 ↩ 206.55.197.104.bc.googleusercontent.com
Mail Server IPs
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
kira.ns.cloudflare.com dns.cloudflare.com 2397913644 10000 2400 604800 1800
Primary NS (mname)
kira.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397913644
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
kira.ns.cloudflare.com
trevor.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
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; fo=1; pct=100
~ 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
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- google-site-verification=5d5t-weU0eC-w6_j1i16u23Z4GtojsfkjwO2Zx7hvAY
- google-site-verification=IfX-_PZBjKq5uuXde6FV0iMdVPqCbdvI7xGK9CClwp0
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=5c7CgGSycSck45Bw0NOf5AU4SxAO6uiRi9wzUOs4hp8
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