Opt a domain out of scan.mx
To stop scan.mx from checking a domain, publish a single DNS TXT record. There is no form, no account, and no waiting: the record is checked on every lookup, so it applies as soon as it is visible and stops applying the moment you remove it.
Add this DNS record
optout.YOURDOMAIN. IN TXT "scan.mx"
Replace YOURDOMAIN with your domain. For example, to
opt out example.com, create a TXT record at
optout.example.com with the value scan.mx.
Once the record resolves, scan.mx returns a neutral response for the domain instead of a report and does not connect to its mail servers. Publishing the record is proof that you control the domain's DNS, so no other verification is needed.
Frequently asked questions
How long does the opt-out last?
Exactly as long as the TXT record exists. It is checked live on every lookup. Remove the record and scanning resumes on the next request.
Do I need an account or to submit a form?
No. The DNS record is the whole mechanism. Controlling the domain's DNS is the authorisation.
Does this also stop the mail-server (SMTP) checks?
Yes. When the record is present scan.mx does not scan the domain at all, so it never connects to its mail servers.
Something still looks wrong or you need a manual block.
Email abuse@scan.mx and we will help, including blocking a domain out of band where a DNS record is not possible.