Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
buttefalls.k12.or.us
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-07 16:36:00 UTC · ↺ Refresh
MX Hostnames
- d256027a.ess.barracudanetworks.com
- d256027b.ess.barracudanetworks.com
MX Priorities
- d256027b.ess.barracudanetworks.com: 5
- d256027a.ess.barracudanetworks.com: 1
A / AAAA Records
- 107.20.149.85 ↩ ec2-107-20-149-85.compute-1.amazonaws.com
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
dns1.soesd.k12.or.us hostmaster.soesd.k12.or.us 2009080740 3600 3600 604800 86400
Primary NS (mname)
dns1.soesd.k12.or.us
Admin Email (rname)
hostmaster@soesd.k12.or.us
Serial
2009080740
Refresh
3600s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns2.nero.net
ns1.nero.net
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com include:spf.sisk12.com include:spf.ess.barracudanetworks.com include:amazonses.com ip4:198.237.125.10 include:customerspf.schoolmessenger.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 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
3 records- MS=ms22957112
- google-site-verification=DgNCdnws4xnQ_lTmlNkN_I8K4qcznxXfURBaJoO2Ums
- SPFv=spf1 include:_spf.google.com include:spf.sisk12.com include:spf.ess.barracudanetworks.com include:amazonses.com ip4:198.237.125.10 include:customerspf.schoolmessenger.com -all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for buttefalls.k12.or.us
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits