Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
shieldnationalsecurity.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 19:27:12 UTC · ↺ Refresh
MX Hostnames
- mx.shieldnationalsecurity.com.cust.b.hostedemail.com
MX Priorities
- mx.shieldnationalsecurity.com.cust.b.hostedemail.com: 10
A / AAAA Records
- 54.191.73.220 ↩ indigo.ontrixsolutions.com
Mail Server IPs
- 64.98.38.4 ↩ mx.b.hostedemail.com
SOA Record
Raw SOA
dns-1.ontrix.com support.ontrix.com 2023061301 3600 3600 1209600 86400
Primary NS (mname)
dns-1.ontrix.com
Admin Email (rname)
support@ontrix.com
Serial
2023061301
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
dns-2.ontrix.com
dns-1.ontrix.com
SPF Record
✓ Soft Fail (~all)
v=spf1 +mx +ip4:64.98.0.0/16 +ip4:54.191.73.220 ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 +mx +ip4:64.98.0.0/16 +ip4:54.191.73.220 ~all
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