Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tlu.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 03:16:13 UTC · ↺ Refresh
MX Hostnames
- tlu-edu.mail.protection.outlook.com
MX Priorities
- tlu-edu.mail.protection.outlook.com: 10
A / AAAA Records
- 165.227.248.71 (no PTR)
Mail Server IPs
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c946::5 ↩ mail-ch4pr21cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
cbru.br.ns.els-gms.att.net rm-hostmaster.ems.att.com 2008031543 3600 900 604800 7200
Primary NS (mname)
cbru.br.ns.els-gms.att.net
Admin Email (rname)
rm-hostmaster@ems.att.com
Serial
2008031543
Refresh
3600s
Retry
900s
Expire
604800s
Minimum TTL
7200s
Nameservers (NS)
cbru.br.ns.els-gms.att.net
cmtu.mt.ns.els-gms.att.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.qualtrics.com ip4:209.184.108.19 ip4:209.184.108.26 include:amazonses.com include:servers.mcsv.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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:spf.protection.outlook.com include:_spf.qualtrics.com ip4:209.184.108.19 ip4:209.184.108.26 include:amazonses.com include:servers.mcsv.net -all
- MS=ms80270633
- 66Pk5K03xzKwCiplCZ22ZsfxoAtCKYeIoaFU54CEpMca7iwftVvvUGJT58B6SIyf4UTVo7Rgw1+DwR0ycGftKA==
- adobe-idp-site-verification=e53fd8c49109d238537910bf668a39c6d00a5601907cc8eb3c34add1bcca3963
- facebook-domain-verification=1i9p3bk618s6qjwx16rxyqi58w0cq6
Full email verification for tlu.edu
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