Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
delphinus.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 21:49:50 UTC · ↺ Refresh
MX Hostnames
- delphinusengineering.mail.protection.office365.us
MX Priorities
- delphinusengineering.mail.protection.office365.us: 0
A / AAAA Records
- 184.154.208.19 ↩ us8.tmd.cloud
Mail Server IPs
- 23.103.199.138 ↩ mail-bn3usg020138.inbound.protection.outlook.com
- 23.103.199.170 ↩ mail-cy1usg020170.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-33.azuregov-dns.us azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-33.azuregov-dns.us
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2-33.azuregov-dns.us
ns3-33.azuregov-dns.us
ns4-33.azuregov-dns.us
ns1-33.azuregov-dns.us
SPF Record
✓ Strict (-all)
v=spf1 ip4:52.227.164.215 ip4:174.79.196.59 include:spf.protection.office365.us -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
1 record- SPFv=spf1 ip4:52.227.164.215 ip4:174.79.196.59 include:spf.protection.office365.us -all
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