Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tbc.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-17 22:00:52 UTC · ↺ Refresh
MX Hostnames
- tbc-edu.mail.protection.outlook.com
MX Priorities
- tbc-edu.mail.protection.outlook.com: 5
A / AAAA Records
- 165.227.89.101 ↩ 333816.cloudwaysapps.com
Mail Server IPs
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns2.no-ip.com hostmaster.no-ip.com 2011090352 10800 1800 604800 1800
Primary NS (mname)
ns2.no-ip.com
Admin Email (rname)
hostmaster@no-ip.com
Serial
2011090352
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns3.no-ip.com
ns4.no-ip.com
ns5.no-ip.com
ns1.no-ip.com
ns2.no-ip.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:107.1.39.58 ip4:173.50.165.64/28 include:spf.protection.outlook.com ip4:192.254.115.214 include:email.populi.co ip4:66.132.139.224 ip4:66.132.139.227 include:sedlv.net include:sendgrid.net ip4:216.47.186.35 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=s;adkim=s;fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
6 records- atlassian-domain-verification=16sNu5vxpNRQP/RaPjXaeLaTaktxla1VBNVL3wVJTVbzIiiaay8cy4rJ6OlZydSH
- SPFv=spf1 ip4:107.1.39.58 ip4:173.50.165.64/28 include:spf.protection.outlook.com ip4:192.254.115.214 include:email.populi.co ip4:66.132.139.224 ip4:66.132.139.227 include:sedlv.net include:sendgrid.net ip4:216.47.186.35 -all
- s9KqPYooNEFoK0tyH5hjql9FdVYJ/KLl3kvp+kw6ifE=
- adobe-idp-site-verification=d2c2f0780183f4fa2529018bf164f65b46199614c4d23af07f36ab0253de6bb9
- google-site-verification=Zx0buw4Vv7IT09WYFWW8mmWahd5oy_3Fn6w-gtyPoJA
- google-site-verification=0Mp_-0hgvQUhJXylgD0p4LLUQElkGcurgiXo90Wpm3A
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