Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jeffharbin.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 12:48:01 UTC · ↺ Refresh
MX Hostnames
- mail.jeffharbin.com
MX Priorities
- mail.jeffharbin.com: 0
A / AAAA Records
- 173.254.28.219 ↩ just2019.justhost.com
Mail Server IPs
- 173.254.28.219 ↩ just2019.justhost.com
SOA Record
Raw SOA
ns1.justhost.com root.just2019.justhost.com 2025100600 86400 7200 3600000 300
Primary NS (mname)
ns1.justhost.com
Admin Email (rname)
root@just2019.justhost.com
Serial
2025100600
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
300s
Nameservers (NS)
ns2.justhost.com
ns1.justhost.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ptr include:justhost.com ?all
📊 DNS lookups: 4/10
? Neutral (?all) — no 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 a mx ptr include:justhost.com ?all
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