domain report
Is postech.ac.kr a business email?
postech.ac.kr is an education domain: a school, college or university.
Education domain — a school or university.
- category
- education
- recommendation
- allow
- confidence
- 93%
- Google Workspace: detected
- Microsoft 365: detected
Mail setup
- Receives mail
- Yes
- Mail provider
- —
- SPF
- v=spf1 ip4:141.223.1.111 ip4:141.223.1.114 ip4:141.223.1.254 ip4:141.223.1.116 ip4:141.223.1.117 ip4:141.223.1.124 ip4:141.223.1.125 ip4:141.223.5.171 include:spf.protection.outlook.com include:mail.stibee.com include:_spf.google.com ~all
- DMARC policy
- quarantine
| Priority | MX host |
|---|---|
| 5 | sniper.postech.ac.kr |
Workspace
- Google WorkspaceDetected
- Microsoft 365Detected · region AS · federated sign-in · IdP adfs
Detected per company domain from public DNS and Microsoft's documented tenant discovery — never per person.
Why this verdict
Confidence 93% · recommendation allow under the default b2b policy.
What this means
Addresses at postech.ac.kr belong to an institution's own domain, so isBusinessEmail treats them as organizational: is_business is true and the recommendation is allow under every policy. It is on our education domains list.
Students and staff use these addresses, which makes them useful for academic discounts and verification. postech.ac.kr receives mail through sniper.postech.ac.kr.
Questions about postech.ac.kr
Is postech.ac.kr a business email?
It is an organizational email on an education domain. isBusinessEmail returns category "education" with is_business: true.
Can I use postech.ac.kr to verify students?
An address on an education domain shows the person has an account at the institution, which many companies accept for student discounts. Alumni and staff may have one too.
Should I allow postech.ac.kr sign-ups?
isBusinessEmail recommends allow for education domains under the b2b, strict and lenient policies.