cfbisd.edu

Valid Email Server
Domain Lookup › cfbisd.edu

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cfbisd.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 01:36:47 UTC · ↺ Refresh

MX Hostnames

  • cfbisd-edu.mail.protection.outlook.com

MX Priorities

  • cfbisd-edu.mail.protection.outlook.com: 0

A / AAAA Records

  • 104.17.69.73 (no PTR)

Mail Server IPs

  • 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
  • 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
  • 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
  • 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
  • 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com

SOA Record

Raw SOA dns1.cfbisd.edu administrator.cfbisd.edu 2900942981 3600 600 172800 1800
Primary NS (mname)
dns1.cfbisd.edu
Admin Email (rname)
administrator@cfbisd.edu
Serial
2900942981
Refresh
3600s
Retry
600s
Expire
172800s
Minimum TTL
1800s

Nameservers (NS)

dns2.cfbisd.edu
dns1.cfbisd.edu

SPF Record

✓ Strict (-all)
v=spf1 ip4:64.247.25.138 ip4:192.206.243.144 ip4:192.206.245.128 ip4:192.206.247.61 ip4:192.206.244.170 include:spf.protection.outlook.com include:helpscoutemail.com include:_netblocks.google.com include:_spf.google.com include:amazonses.com -all
📊 DNS lookups: 5/10
✓ 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

9 records
  • cisco-ci-domain-verification=20384a81bab32980c2edfeed20a26434773bb9828cf64574417806edaf7894b7
  • v=msv1 t=87DF9B28-D80D-4FA0-B7F5-B1505E3B6CBA
  • apple-domain-verification=92ood027feUVV99q
  • docusign=b021c1cf-14fb-4403-baf8-690234b87535
  • 15et3rfunlchamrnmefpdje161
  • adobe-idp-site-verification=324164816f7698c9b6329d3ff2084d33c2746ba073987ad7e28588f35d1a4d34
  • google-site-verification=PwfMbqf075mpe12K1PUAHI6y-NqwaUzab7lMEceoNbk
  • SPFv=spf1 ip4:64.247.25.138 ip4:192.206.243.144 ip4:192.206.245.128 ip4:192.206.247.61 ip4:192.206.244.170 include:spf.protection.outlook.com include:helpscoutemail.com include:_netblocks.google.com include:_spf.google.com include:amazonses.com -all
  • duo_sso_verification=vSD7PiUtnU9zQT3sSTZZPbLAMLUST1w4PrPOpmCPQQdyOAbNj2kz73nyZpzye8lM
Full email verification for cfbisd.edu

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits