Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
co.mendocino.ca.us
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 21:30:56 UTC · ↺ Refresh
MX Hostnames
- d216148b.ess.barracudanetworks.com
- d216148a.ess.barracudanetworks.com
MX Priorities
- d216148a.ess.barracudanetworks.com: 10
- d216148b.ess.barracudanetworks.com: 20
A / AAAA Records
- 50.230.66.99 (no PTR)
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns1.sonic.net hostmaster.sonic.net 2026012800 3600 300 1209600 3600
Primary NS (mname)
ns1.sonic.net
Admin Email (rname)
hostmaster@sonic.net
Serial
2026012800
Refresh
3600s
Retry
300s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
b.auth-ns.sonic.net
c.auth-ns.sonic.net
a.auth-ns.sonic.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
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.protection.outlook.com include:spf.ess.barracudanetworks.com -all
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