Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
castleandkey.ae
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 23:34:07 UTC · ↺ Refresh
MX Hostnames
- castleandkey-ae.mail.protection.outlook.com
MX Priorities
- castleandkey-ae.mail.protection.outlook.com: 0
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 52.101.148.1 ↩ mail-dx1p273cu00301.inbound.protection.outlook.com
- 52.101.148.3 ↩ mail-dx3p273cu00103.inbound.protection.outlook.com
- 52.101.148.13 ↩ mail-dx2p273cu00205.inbound.protection.outlook.com
- 52.101.147.1 ↩ mail-au1p273cu00101.inbound.protection.outlook.com
- 2a01:111:f403:cc30::3 ↩ mail-dx2p273cu00203.inbound.protection.outlook.com
- 2a01:111:f403:cc2f:: ↩ mail-au1p273cu00100.inbound.protection.outlook.com
- 2a01:111:f403:cc30::1 ↩ mail-dx3p273cu00101.inbound.protection.outlook.com
- 2a01:111:f403:cc30:: ↩ mail-dx1p273cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1.bdm.microsoftonline.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com
ns1.bdm.microsoftonline.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 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
4 records- google-site-verification=-RON7_nfKmjMwdDM0A5948mZicKVPaRAYQliSak5if0
- mscid=EBc3USIj2EhXR0HAwnoLV0E1sX9+coUr4qsZSdEUds5zSeetUdbqt6Z6zmKGojKLrsBtbkIYBo0D5+1bHm9hVA==
- MS=ms75070070
- SPFv=spf1 include:spf.protection.outlook.com -all
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