Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
istonish.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 16:17:45 UTC · ↺ Refresh
MX Hostnames
- d250097a.ess.barracudanetworks.com
- d250097b.ess.barracudanetworks.com
MX Priorities
- d250097b.ess.barracudanetworks.com: 5
- d250097a.ess.barracudanetworks.com: 1
A / AAAA Records
- 104.198.132.50 ↩ 50.132.198.104.bc.googleusercontent.com
Mail Server IPs
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns1-03.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-03.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2-03.azure-dns.net
ns3-03.azure-dns.org
ns4-03.azure-dns.info
ns1-03.azure-dns.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:198.199.54.185 ip4:66.35.51.81 include:spf.ess.barracudanetworks.com include:sendgrid.net include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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- _spf.salesforce.com
- ff625v3fdkesjd1gp5h6v5fsav
- SPFv=spf1 ip4:198.199.54.185 ip4:66.35.51.81 include:spf.ess.barracudanetworks.com include:sendgrid.net include:spf.protection.outlook.com -all
Full email verification for istonish.com
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