Domain never sends mail, want to signal it accepts none
Null-MX (MX 0 .) tells mail servers this domain takes no mail. Better than nothing.
Try this first
- 1Add: MX 0 . (literal dot)
- 2Add SPF v=spf1 -all and DMARC p=reject
- 3Together they hinder spoofing of the domain
- 4Test with a probe that must hard-bounce
When to bring us in
If the domain still occasionally needs to send, skip null-MX and use normal config.
See also
- Domain expires tomorrow and nobody saw the emailAn expired domain doesn't transfer instantly. There's a redemption window, but you pay extra.
- Unsure whether to enable auto-renewDisabling auto-renew only makes sense for domains you'll truly drop. For anything live, just keep it on.
- New registrar asks for auth code, can't find itEPP code or transfer code is the password to move a domain from registrar A to B.
None of the above fits?
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