Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cardinalheating.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 01:09:43 UTC · ↺ Refresh
MX Hostnames
- d322971b.ess.barracudanetworks.com
- d322971a.ess.barracudanetworks.com
MX Priorities
- d322971a.ess.barracudanetworks.com: 10
- d322971b.ess.barracudanetworks.com: 10
A / AAAA Records
- 141.193.213.11 (no PTR)
- 141.193.213.10 (no PTR)
Mail Server IPs
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns1.melbourneit.net admin.melbourneit.net 2025091105 86400 7200 3600000 172800
Primary NS (mname)
ns1.melbourneit.net
Admin Email (rname)
admin@melbourneit.net
Serial
2025091105
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
172800s
Nameservers (NS)
ns4.melbourneit.net
ns1.melbourneit.net
ns2.melbourneit.net
ns3.melbourneit.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
4 records- SPFv=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com -all
- nto8dh4emum7crponpi1c3k82t
- wpe-verification=cardinalheatin
- google-site-verification=dYOnJt9j00_LLTPYRoeVxL_QPbW-MWXsdP-o5NR7hVQ
Full email verification for cardinalheating.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits