Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
blu-castle.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 00:08:06 UTC · ↺ Refresh
MX Hostnames
- blucastle-com0i.mail.protection.outlook.com
MX Priorities
- blucastle-com0i.mail.protection.outlook.com: 0
A / AAAA Records
- 185.230.63.107 ↩ unalocated.63.wixsite.com
Mail Server IPs
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
opal.ns.cloudflare.com dns.cloudflare.com 2399497108 10000 2400 604800 1800
Primary NS (mname)
opal.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399497108
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
vasilii.ns.cloudflare.com
opal.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
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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- google-site-verification=4UpK8FEQmJHkE5xB_TNlaPXdYA85K9MRmd_Fmjwib6M
- SPFv=spf1 include:spf.protection.outlook.com -all
- atlassian-domain-verification=QgYMQK77SDu93rmqajoLcrMVSuOUtSfZesaMBzBgw4DWNAyIffH8MQ4htCGR6A7V
Full email verification for blu-castle.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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