Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nationcustombuilders.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 19:44:29 UTC · ↺ Refresh
MX Hostnames
- mail.harborwall.com
MX Priorities
- mail.harborwall.com: 10
A / AAAA Records
- 72.22.15.72 (no PTR)
Mail Server IPs
- 72.22.2.66 ↩ mx.harborwall.com
SOA Record
Raw SOA
ns1.harborwall.com support.harborwall.com 0 10800 3600 604800 3600
Primary NS (mname)
ns1.harborwall.com
Admin Email (rname)
support@harborwall.com
Serial
0
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.harborwall.com
ns2.harborwall.com
SPF Record
✓ Strict (-all)
v=spf1 a mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; adkim=r; aspf=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx -all
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