domain report
Is mt-system.ru a business email?
No. mt-system.ru is a free email provider: one shared domain used by many unrelated people.
Personal email on a shared provider (think Gmail, Outlook, Yahoo).
- category
- personal
- recommendation
- block
- confidence
- 97%
- Google Workspace: not detected
- Microsoft 365: not detected
Mail setup
- Receives mail
- Yes
- Mail provider
- —
- SPF
- v=spf1 a mx ip4:81.95.22.5 ip4:81.95.22.6 ip4:185.71.66.239 ip4:193.84.78.112 ~all
- DMARC policy
- reject
| Priority | MX host |
|---|---|
| 10 | relay1.mt-system.ru |
| 20 | relay2.mt-system.ru |
Workspace
- Google WorkspaceNot detected
- Microsoft 365Not detected
Detected per company domain from public DNS and Microsoft's documented tenant discovery — never per person.
Why this verdict
Confidence 97% · recommendation block under the default b2b policy.
What this means
Anyone can open an inbox at mt-system.ru, so an address there says nothing about the company the person works for. That makes it a personal email, even when someone uses it for work. It is on our free email providers list.
isBusinessEmail returns category "personal": block under the b2b and strict policies, allow under lenient. mt-system.ru receives mail through relay1.mt-system.ru, relay2.mt-system.ru.
Questions about mt-system.ru
Is mt-system.ru a business email?
No. mt-system.ru is a shared email provider, so isBusinessEmail classifies it as "personal". A business email uses a domain the company owns.
Is mt-system.ru a free email provider?
Yes. mt-system.ru hands out inboxes on its own domain to individuals, which is what makes an address there a personal email.
Should a B2B product accept mt-system.ru sign-ups?
It depends on what you need. If you need a company tenant or a company to sell to, ask for a work email; if you only want real people, accept it. The b2b policy blocks personal addresses and the lenient policy allows them.
How can I tell mt-system.ru apart from a company domain in code?
POST the address to /v1/check: shared providers come back with category "personal" and is_free_provider: true, company domains with category "business".