Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
atu.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 02:54:01 UTC · ↺ Refresh
MX Hostnames
- atu-edu.mail.protection.outlook.com
MX Priorities
- atu-edu.mail.protection.outlook.com: 1
A / AAAA Records
- 147.135.72.228 (no PTR)
Mail Server IPs
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ens-pri.atu.edu postmaster.atu.edu 2026030900 3600 3600 1209600 3600
Primary NS (mname)
ens-pri.atu.edu
Admin Email (rname)
postmaster@atu.edu
Serial
2026030900
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns2.atu.edu
ns3.atu.edu
ns4.atu.edu
ns1.atu.edu
SPF Record
✓ Strict (-all)
v=spf1 include:spf1.atu.edu include:spf2.atu.edu -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
5 records- SPFv=spf1 include:spf1.atu.edu include:spf2.atu.edu -all
- e2ma-verification=k6ucb
- ciscocidomainverification=14c4c77a615d566a5be84c965bc59236d7d5f6a12c549133efa2a0d3b1036052
- google-site-verification=KvIsRT8qcLUOdpdL957_xWvZ-wegnR5yKRqK2MFFNKA
- atlassian-domain-verification=Y404FrKM/5QooiXFSdh0m7temeoB1m9FG4Jh5up/TjqOahZ/rym8h5sU5mLltsnr
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 atu.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits