Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grpin.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-14 01:35:29 UTC · ↺ Refresh
MX Hostnames
- mail1.redtailtechnology.com
MX Priorities
- mail1.redtailtechnology.com: 10
A / AAAA Records
- 54.164.9.107 ↩ ec2-54-164-9-107.compute-1.amazonaws.com
- 54.85.200.131 ↩ ec2-54-85-200-131.compute-1.amazonaws.com
Mail Server IPs
- 4.17.237.44 (no PTR)
SOA Record
Raw SOA
dns105.register.com root.register.com 125101510 10800 3600 604800 3600
Primary NS (mname)
dns105.register.com
Admin Email (rname)
root@register.com
Serial
125101510
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns106.register.com
dns105.register.com
SPF Record
✓ Strict (-all)
v=spf1 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
2 records- SPFv=spf1 include:spf.redtailtechnology.com -all
- google-site-verification=xqISojcmQDgE-hfsiz0BrFmI1aUQinTLdz_oA62Trzw
Full email verification for grpin.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits