Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
united-hvac.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 16:35:31 UTC · ↺ Refresh
MX Hostnames
- unitedhvac.sendio.com
MX Priorities
- unitedhvac.sendio.com: 0
A / AAAA Records
- 192.185.169.116 ↩ expagroup
Mail Server IPs
- 165.140.58.110 ↩ unitedhvac.sendio.com
SOA Record
Raw SOA
ns57.domaincontrol.com dns.jomax.net 2026021600 28800 7200 604800 600
Primary NS (mname)
ns57.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026021600
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns58.domaincontrol.com
ns57.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 a a:unitedhvac.sendio.com ip4:75.145.255.241 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- MS=ms17126154
- SPFv=spf1 a a:unitedhvac.sendio.com ip4:75.145.255.241 include:spf.protection.outlook.com -all
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