Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
castlecooke.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 13:36:06 UTC · ↺ Refresh
MX Hostnames
- mxa-0055d101.gslb.pphosted.com
- mxb-0055d101.gslb.pphosted.com
MX Priorities
- mxb-0055d101.gslb.pphosted.com: 10
- mxa-0055d101.gslb.pphosted.com: 10
A / AAAA Records
- 40.112.243.0 (no PTR)
Mail Server IPs
- 205.220.176.80 ↩ mx0b-0055d101.pphosted.com
SOA Record
Raw SOA
ns1.worldnic.com namehost.worldnic.com 125090516 10800 3600 604800 3600
Primary NS (mname)
ns1.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125090516
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.worldnic.com
ns2.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 a:mx0a-0055d101.pphosted.com a:mx0b-0055d101.pphosted.com a:camail.castlecooke.com include:spf-0055d101.pphosted.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- MS=ms70621612
- SPFv=spf1 a:mx0a-0055d101.pphosted.com a:mx0b-0055d101.pphosted.com a:camail.castlecooke.com include:spf-0055d101.pphosted.com -all
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