domain report
Is stb.iau.ir a business email?
stb.iau.ir 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 mx ip4:46.245.95.116 ip4:46.245.95.117 ip4:46.245.95.118 ip4:46.245.95.119 ip4:46.245.95.122 ip4:46.245.95.123 ip4:46.245.95.124 ip4:46.245.95.125 ip4:46.245.95.127 ip4:46.245.95.197 -all
- DMARC policy
- reject
| Priority | MX host |
|---|---|
| 5 | mx-1.iau.ac.ir |
| 10 | mx-3.iau.ac.ir |
| 10 | mx-4.iau.ac.ir |
| 10 | mx-2.iau.ac.ir |
Workspace
- Google WorkspaceNot detected
- Microsoft 365Tenant only: Microsoft sign-in works, email runs elsewhere · region EU · managed sign-in
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 stb.iau.ir 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. stb.iau.ir receives mail through mx-1.iau.ac.ir, mx-3.iau.ac.ir, mx-4.iau.ac.ir and more.
Questions about stb.iau.ir
Is stb.iau.ir a business email?
It is an organizational email on an education domain. isBusinessEmail returns category "education" with is_business: true.
Can I use stb.iau.ir 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 stb.iau.ir sign-ups?
isBusinessEmail recommends allow for education domains under the b2b, strict and lenient policies.