Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ussupply.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 12:49:09 UTC · ↺ Refresh
MX Hostnames
- d169993a.ess.barracudanetworks.com
- d169993b.ess.barracudanetworks.com
MX Priorities
- d169993b.ess.barracudanetworks.com: 20
- d169993a.ess.barracudanetworks.com: 10
A / AAAA Records
- 151.101.193.124 (no PTR)
- 151.101.65.124 (no PTR)
- 151.101.129.124 (no PTR)
- 151.101.1.124 (no PTR)
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns-2027.awsdns-61.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-2027.awsdns-61.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1522.awsdns-62.org
ns-2027.awsdns-61.co.uk
ns-427.awsdns-53.com
ns-631.awsdns-14.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:spf.constantcontact.com include:em2660.ussupply.com ip4:71.185.69.71 ip4:50.73.193.137 ip4:216.75.244.45 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com include:spf.constantcontact.com include:em2660.ussupply.com ip4:71.185.69.71 ip4:50.73.193.137 ip4:216.75.244.45 -all
Full email verification for ussupply.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits