Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
usmarketingcorp.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 02:14:21 UTC · ↺ Refresh
MX Hostnames
- mail1.redtailtechnology.com
MX Priorities
- mail1.redtailtechnology.com: 10
A / AAAA Records
- 98.100.211.132 ↩ syn-098-100-211-132.biz.spectrum.com
Mail Server IPs
- 4.17.237.44 (no PTR)
SOA Record
Raw SOA
ns4.inet-web.com hostmaster.inetwebusa.com 25 900 600 86400 3600
Primary NS (mname)
ns4.inet-web.com
Admin Email (rname)
hostmaster@inetwebusa.com
Serial
25
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s
Nameservers (NS)
ns4.inet-web.com
ns4a.inet-web.com
ns5.inet-web.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:98.100.211.0/24 ip4:65.74.131.96/27 ip4:65.74.153.192/27 include:spf.redtailtechnology.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
1 record- SPFv=spf1 ip4:98.100.211.0/24 ip4:65.74.131.96/27 ip4:65.74.153.192/27 include:spf.redtailtechnology.com -all
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