domain report
Is su.se a business email?
su.se is an education domain: a school, college or university.
Education domain — a school or university.
- category
- education
- recommendation
- allow
- confidence
- 93%
- Google Workspace: not detected
- Microsoft tenant: detected
Mail setup
- Receives mail
- Yes
- Mail provider
- —
- SPF
- v=spf1 ip4:77.238.35.11 ip6:2001:6b0:5:1212:250:56ff:feaf:6c7f ip4:77.238.36.76 ip6:2001:6b0:5:1213:250:56ff:feaf:c14c ip4:77.238.37.81 ip6:2001:6b0:5:1214:250:56ff:feaf:8222 include:_spf-a.su.se ~all
- DMARC policy
- reject
| Priority | MX host |
|---|---|
| 10 | mailfilter-ng-4.sunet.se |
| 10 | mailfilter-ng-3.sunet.se |
| 10 | mailfilter-ng-1.sunet.se |
| 20 | mailfilter-ng-2.sunet.se |
Workspace
- Google WorkspaceNot detected
- Microsoft 365Tenant only: Microsoft sign-in works, email runs elsewhere · region EU · 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 su.se 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. su.se receives mail through mailfilter-ng-4.sunet.se, mailfilter-ng-3.sunet.se, mailfilter-ng-1.sunet.se and more.
Questions about su.se
Is su.se a business email?
It is an organizational email on an education domain. isBusinessEmail returns category "education" with is_business: true.
Can I use su.se 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 su.se sign-ups?
isBusinessEmail recommends allow for education domains under the b2b, strict and lenient policies.