Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
biohorizons.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 18:53:41 UTC · ↺ Refresh
MX Hostnames
- d139997a.ess.barracudanetworks.com
- d139997b.ess.barracudanetworks.com
MX Priorities
- d139997a.ess.barracudanetworks.com: 0
- d139997b.ess.barracudanetworks.com: 1
A / AAAA Records
- 20.55.103.191 (no PTR)
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
a1-25.akam.net hostmaster.biohorizons.com 2024012663 3600 600 604800 300
Primary NS (mname)
a1-25.akam.net
Admin Email (rname)
hostmaster@biohorizons.com
Serial
2024012663
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
a1-25.akam.net
a10-67.akam.net
a26-67.akam.net
a24-66.akam.net
a3-66.akam.net
a5-65.akam.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:spf.ess.barracudanetworks.com include:_spf.salesforce.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; rua=mailto:[email protected],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],mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- apple-domain-verification=TdQvCGFquTjr2tuR
- ZOOM_verify_Nk17HXldxM17Nk5JDOT3oO
- d365mktkey=w5xQMmFsxZVocC3xofZ5dPxHV6kglJvaPFHdoc74oh8x
- +fVxjEppZLSueb2XZOlJqJ3WAjLjJyFm/VUwTj9JjIff518K9ib+9OwKp9oW0sst+wztfM+FrUkVIWJAKw2AdQ==
- d365mktkey=4MpJM6JCkOrZ21xSwviuQtsDQBOxccExzzUyp9WAonkx
- SPFv=spf1 include:spf.protection.outlook.com include:sendgrid.net include:spf.ess.barracudanetworks.com include:_spf.salesforce.com -all
- MS=1E06F598729991D3FC513B0B7BA80AAAF68B03C8
Full email verification for biohorizons.com
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