sidney.k12.mt.us

Valid Email Server
Domain Lookup › sidney.k12.mt.us

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sidney.k12.mt.us
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-03 15:40:21 UTC · ↺ Refresh

MX Hostnames

  • sidney-k12-mt-us.mail.protection.outlook.com

MX Priorities

  • sidney-k12-mt-us.mail.protection.outlook.com: 0

A / AAAA Records

  • 52.206.191.232 ↩ ec2-52-206-191-232.compute-1.amazonaws.com

Mail Server IPs

  • 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
  • 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
  • 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com

SOA Record

Raw SOA cudess1.umt.edu dns-request.umt.edu 2023060901 21600 900 1209600 86400
Primary NS (mname)
cudess1.umt.edu
Admin Email (rname)
dns-request@umt.edu
Serial
2023060901
Refresh
21600s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

dns2.msu.montana.edu
cudess2.umt.edu
cudess1.umt.edu
ens-o1.umt.edu

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

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 -all
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