MX records for 1under.com
Live MX lookup for 1under.com: no working mail server was found.
try:
- mail hosts
- —
- provider
- —
- spf record
- v=spf1 -all
- dmarc policy
- none published
- disposable domain
- no
- free consumer provider
- yes
Mail servers for 1under.com
1under.com publishes a null MX record: a single entry with priority 0 and an empty target, defined by RFC 7505. It is the domain's explicit declaration that it never accepts email, so every address at 1under.com is undeliverable and senders should not retry.
What this means for verification
Because no mail server accepts mail for 1under.com, the API answers undeliverable for every address there without a mailbox probe, and those answers are free: undeliverable verdicts never cost a credit.
More checks for 1under.com
checked 2026-09-03 · sources: live-dns 2026-09-03 · disposable-domains 2026-09-02 · free-provider-domains 2026-09-02
Need this at scale?
The Spaw API runs the same checks plus mailbox-level SMTP verification, batch and bulk endpoints, and list monitoring — 10 free lookups a month, no card required.