Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
castles.london
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 22:15:26 UTC · ↺ Refresh
MX Hostnames
- castles-london.mail.protection.outlook.com
MX Priorities
- castles-london.mail.protection.outlook.com: 10
A / AAAA Records
- 209.42.16.189 ↩ d6555.lon1.stableserver.net
Mail Server IPs
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
SOA Record
Raw SOA
ns23.domaincontrol.com dns.jomax.net 2025092302 28800 7200 604800 600
Primary NS (mname)
ns23.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025092302
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns23.domaincontrol.com
ns24.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:217.41.42.43 ip4:217.46.234.166 ip4:88.97.78.59 ip4:51.155.77.202 ip4:51.155.39.2 ip4:51.148.99.73 include:spf.protection.outlook.com include:spf.uk.exclaimer.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- MS=ms95550610
- SPFv=spf1 ip4:217.41.42.43 ip4:217.46.234.166 ip4:88.97.78.59 ip4:51.155.77.202 ip4:51.155.39.2 ip4:51.148.99.73 include:spf.protection.outlook.com include:spf.uk.exclaimer.net -all
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