Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
wholesaleheating.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 16:37:47 UTC · ↺ Refresh
MX Hostnames
- d290747b.ess.barracudanetworks.com
- d290747a.ess.barracudanetworks.com
MX Priorities
- d290747b.ess.barracudanetworks.com: 10
- d290747a.ess.barracudanetworks.com: 0
A / AAAA Records
- 66.135.37.19 ↩ lotus.jmonline.com
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns1098.ui-dns.biz hostmaster.1und1.com 2017060112 28800 7200 604800 600
Primary NS (mname)
ns1098.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060112
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1021.ui-dns.de
ns1076.ui-dns.org
ns1098.ui-dns.biz
ns1109.ui-dns.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:72.206.52.166 ip4:66.135.37.19 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:mailgun.org include:wholesaleheating.cloud ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._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
3 records- isc4cjfgg99tpbj6d4a3fk93b5
- MS=ms93811717
- SPFv=spf1 ip4:72.206.52.166 ip4:66.135.37.19 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:mailgun.org include:wholesaleheating.cloud ~all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for wholesaleheating.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits