Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
castlehoward.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-19 00:52:15 UTC · ↺ Refresh
MX Hostnames
- castlehoward-co-uk.mail.protection.outlook.com
MX Priorities
- castlehoward-co-uk.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.47.196 (no PTR)
- 172.67.172.39 (no PTR)
- 2606:4700:3034::6815:2fc4
- 2606:4700:3036::ac43:ac27
Mail Server IPs
- 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
- 52.101.89.2 ↩ mail-lo3p265cu00302.inbound.protection.outlook.com
- 52.101.99.0 ↩ mail-cwxp265cu00600.inbound.protection.outlook.com
- 52.101.99.2 ↩ mail-cwxp265cu00502.inbound.protection.outlook.com
- 2a01:111:f403:ca0b::1 ↩ mail-lo3p265cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca1a::1 ↩ mail-cwxp265cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca1a:: ↩ mail-cwxp265cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca0b:: ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
SOA Record
Raw SOA
ivan.ns.cloudflare.com dns.cloudflare.com 2403575290 10000 2400 604800 1800
Primary NS (mname)
ivan.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2403575290
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ivan.ns.cloudflare.com
ruth.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:sendgrid.net ip4:51.140.37.132 ip4:51.141.5.228 include:_spf.rmscloud.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
7 records- gveg2k4t70if98uphdge8b0m2o
- SPFv=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:sendgrid.net ip4:51.140.37.132 ip4:51.141.5.228 include:_spf.rmscloud.com -all
- MS=ms14086544
- amazon-business-verification=411e4792f747760eafcc8dfd7d209a2586b7cf9cf180e3f4e2ea46da573ce7fc
- apple-domain-verification=dq7XUTlUlsyvqUCg
- flmfsiv7svto3oj4ntliccjm7m.
- g5cg602rqs68pbk7vuseu55koq
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