Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
shieldhealthcare.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 12:47:30 UTC · ↺ Refresh
MX Hostnames
- d145963a.ess.barracudanetworks.com
- d145963b.ess.barracudanetworks.com
MX Priorities
- d145963a.ess.barracudanetworks.com: 10
- d145963b.ess.barracudanetworks.com: 20
A / AAAA Records
- 13.57.75.7 ↩ ec2-13-57-75-7.us-west-1.compute.amazonaws.com
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
ns-585.awsdns-09.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-585.awsdns-09.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-356.awsdns-44.com
ns-585.awsdns-09.net
ns-1496.awsdns-59.org
ns-1748.awsdns-26.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:12.13.92.224/27 ip4:70.125.224.101 ip4:13.57.75.219 ip4:13.57.75.7 include:spf.protection.outlook.com include:sendgrid.net include:spf.ess.barracudanetworks.com include:_spf.bigcommerce.com include:_spf.salesforce.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- R/y+vjc4WEu7Vx4/mqaFrVMt8G4pJmp12h5Za0+EA12oeO6AjGlbEsvUF9labJ93rLudWFZchRs5T2cNXkzs/g==
- apple-domain-verification=WQGcadY6xmqfsmTQ
- atlassian-domain-verification=Kkh9fzJlRC1WzmmJGpbH1Mpat75fwJP8sujtvSWX9UXuF2slinMiy/bdKDnkxOGe
- google-site-verification=S-rEMErmBn-aaCVZobNnxfbc6BANwKGmattXM-Ko0ts
- SPFv=spf1 ip4:12.13.92.224/27 ip4:70.125.224.101 ip4:13.57.75.219 ip4:13.57.75.7 include:spf.protection.outlook.com include:sendgrid.net include:spf.ess.barracudanetworks.com include:_spf.bigcommerce.com include:_spf.salesforce.com ~all
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