Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koenigfirm.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 09:22:36 UTC · ↺ Refresh
MX Hostnames
- d296436a.ess.barracudanetworks.com
- koenigfirm-com.mail.protection.outlook.com
- d296436b.ess.barracudanetworks.com
MX Priorities
- d296436b.ess.barracudanetworks.com: 20
- d296436a.ess.barracudanetworks.com: 10
- koenigfirm-com.mail.protection.outlook.com: 30
A / AAAA Records
- 50.87.249.222
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
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c801::1
SOA Record
Raw SOA
ns1.dreamhost.com hostmaster.dreamhost.com 2025063002 16983 600 1814400 300
Primary NS (mname)
ns1.dreamhost.com
Admin Email (rname)
hostmaster@dreamhost.com
Serial
2025063002
Refresh
16983s
Retry
600s
Expire
1814400s
Minimum TTL
300s
Nameservers (NS)
ns2.dreamhost.com
ns1.dreamhost.com
ns3.dreamhost.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
1 record- SPFv=spf1 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com -all
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