Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
redlandsusd.net
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 05:43:43 UTC · ↺ Refresh
MX Hostnames
- d59986a.ess.barracudanetworks.com
- d59986b.ess.barracudanetworks.com
MX Priorities
- d59986a.ess.barracudanetworks.com: 10
- d59986b.ess.barracudanetworks.com: 10
A / AAAA Records
- 104.17.68.73 (no PTR)
Mail Server IPs
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns1-04.azure-dns.com azuredns-hostmaster.microsoft.com 2024112100 3600 300 2419200 300
Primary NS (mname)
ns1-04.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
2024112100
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns1-04.azure-dns.com
ns2-04.azure-dns.net
ns3-04.azure-dns.org
ns4-04.azure-dns.info
SPF Record
✓ Strict (-all)
v=spf1 ip4:209.80.40.20 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com ip4:163.150.149.125 ip4:163.150.149.112 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
15 records- google-site-verification=2McF1CThUJNcGQzs3xh7Zm6nSEeBij9Wt2ZrShTO7O4
- MS=ms61713313
- Barracuda Authorization
- Pd3RMiH5ZMrux6G7b4sWnTyT9UVKXtOXrqnqSzoON9Ax/dGFRAPi9J/fPkMudy4U5moMsoyp3E5QTKc+Oe0DhQ==
- SPFv=spf1 ip4:209.80.40.20 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com ip4:163.150.149.125 ip4:163.150.149.112 -all
- Redlands USD
- 20 West Lugonia Ave
- Redlands CA., 92373-1508
- David Massaro
- Coordinator, Technology Services
- Redlands Unified School District
- (909) 748-6720 Voice
- SPFv=spf1 a:mail.redlandsusd.net ~all
- SPFv=spf1 a:spamfilter.redlandsusd.net ~all
- apple-domain-verification=cYpAaGa0ZhWq1QfI
Full email verification for redlandsusd.net
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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