Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
mtmail.mtsu.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-19 02:01:19 UTC · ↺ Refresh
MX Hostnames
- mtmail-mtsu-edu.mail.protection.outlook.com
MX Priorities
- mtmail-mtsu-edu.mail.protection.outlook.com: 0
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
dns-dmz1.mtsu.edu abuse.mtsu.edu 684517891 3600 1800 3600000 10800
Primary NS (mname)
dns-dmz1.mtsu.edu
Admin Email (rname)
abuse@mtsu.edu
Serial
684517891
Refresh
3600s
Retry
1800s
Expire
3600000s
Minimum TTL
10800s
Nameservers (NS)
dns-dmz2.mtsu.edu
mtextdns01.mtsu.edu
dns-dmz1.mtsu.edu
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=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
4 records- autodesk-domain-verification=TSW4T0u7AeaST8t557J7
- smartsheet-site-validation=iwu9pe7V9QJNyXjWsZhknQF8eCl1CMa7
- ZOOM_verify_ZsW-eF7KRIG6UNGbGQ_Jpg
- SPFv=spf1 include:spf.protection.outlook.com -all
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