Email domain
centrum.sk email servers, SPF and DMARC
Mail for @centrum.sk goes to nm-sk-10mx1.eco-mx.cz (MX priority 10) and 3 backup hosts, as DNS showed on 5 November 2026. The host sits under eco-mx.cz. The domain publishes an SPF record v=spf1 redirect=_spf.centrum.cz and no DMARC record, which decide whether mail claiming to be from @centrum.sk is trusted.
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centrum.sk mail DNS on 5 November 2026
| Priority | MX host | Platform |
|---|---|---|
| 10 | nm-sk-10mx1.eco-mx.cz | Not identified |
| 10 | nm-sk-10mx2.eco-mx.cz | Not identified |
| 20 | nm-sk-20mx1.eco-mx.cz | Not identified |
| 20 | nm-sk-20mx2.eco-mx.cz | Not identified |
| SPF | v=spf1 redirect=_spf.centrum.cz |
|---|---|
| DMARC | None published |
| MTA-STS | None published |
| TLS reporting | None published |
Read on 5 November 2026 with dig against 1.1.1.1 (8.8.8.8 as fallback); nothing sent to the mail servers. Check the records today with the email provider lookup.
centrum.sk MX records
centrum.sk publishes 4 MX hosts; senders try the lowest priority number first (nm-sk-10mx1.eco-mx.cz, 10) and fall back to the others in order.
5 other domains we checked on the same day also route mail to hosts under eco-mx.cz, with different records from centrum.sk: atlas.cz, centrum.cz, net.hr, post.sk and volny.cz.
centrum.sk SPF record
The record on 5 November 2026 was v=spf1 redirect=_spf.centrum.cz.
In plain terms, it delegates to _spf.centrum.cz. The top level uses 1 DNS-querying term; SPF allows 10 in total including nested includes (RFC 7208 §4.6.4).
centrum.sk DMARC policy
_dmarc.centrum.sk returned no DMARC record on 5 November 2026. Receivers therefore get no instruction about mail that fails SPF and DKIM, which makes @centrum.sk easier to spoof (RFC 7489).
Domains on the same mail servers as centrum.sk
1 other domain published exactly the same MX hosts and SPF record as centrum.sk on 5 November 2026: pobox.sk. Mail to any of them lands on the same servers.
Can you verify @centrum.sk addresses?
Our checker treats @centrum.sk like any domain: syntax, MX, disposable and role checks first, then a made-up address to rule out a catch-all, then your address at RCPT TO, disconnecting without sending. We have not published a test of how nm-sk-10mx1.eco-mx.cz answers for @centrum.sk, so we make no claim here about whether single mailboxes can be confirmed; each result carries its own reason.
Cleaning a list with these addresses
DNS tells you where mail goes, not whether one person's mailbox still exists. For a list, run the whole file through a verifier before you send: invalid rows come out, risky rows (catch-all, unknown, refused) go in their own segment, and valid rows are safe to mail.
Common questions
- What are the MX records for centrum.sk?
- On 5 November 2026:
nm-sk-10mx1.eco-mx.cz(priority 10),nm-sk-10mx2.eco-mx.cz(priority 10),nm-sk-20mx1.eco-mx.cz(priority 20),nm-sk-20mx2.eco-mx.cz(priority 20). - Does centrum.sk have SPF and DMARC?
- On 5 November 2026
centrum.skpublished an SPF recordv=spf1 redirect=_spf.centrum.czand no DMARC record. - Is centrum.sk a disposable email domain?
- No.
centrum.skis not on the disposable domain list our checker uses, so @centrum.sk addresses are checked like any other mailbox. See the disposable domain checker for the list. - Is centrum.sk the same mail system as pobox.sk?
- Its DNS says so: on 5 November 2026 both published the same MX hosts and SPF record, so mail to either lands on the same servers.
Free checks for @centrum.sk lists
- Bulk email checker for a pasted list or CSV
- Verify a whole file with a reason for every row
- SPF lookup counter
- MTA-STS checker
- Disposable email checker
Another domain? See every email domain we have mapped and what our checker does at each mailbox provider.
Got a list with @centrum.sk addresses?
Sign in with Google and the first 100 addresses are checked free: valid, risky and invalid, with the reason for each row and a file to download. No card. After that, plans start at $9/mo for 2,500 emails a month.
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