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For the Email to DNS TXT Contact DCV method, an authorization email is sent to the email addresses found in the DNS TXT record on the
_validation-contactemail subdomain of the domain to be validated.
To use the Email to DNS TXT Contact DCV method, you place the DNS TXT record on the
_validation-contactemail subdomain of the domain you want to validate. The value of this text record can be one or more valid email addresses.
|Subdomain host||Time to Live (TTL)||TXT Value|
|_validation-contactemail||Shorter is email@example.com|
For this tutorial we'll be using AWS Route 53 to add a new TXT record for our fastssl.com domain. The principles will be the same for all DNS management systems.
_validation-contactemailinto the Record name box. Be sure to include the leading underscore. Select Record type TXT and then enter one or more valid email addresses in the Value box. The emails can be ANY valid email and do not have to be @ the domain you're creating the DNS record for. When you're done, click Create records.
Once you've gotten your new TXT setup at your DNS management console, you'll want to see if the world sees it. One way to check is via Google Admin Toolbox DIG .
The Email to DNS TXT Contact DCV method is a subset of the DCV by Email Verification method where allowed email addresses can come from three resources:
When placing a new, renewal or reissue request choose Email Verification as your Domain Control Validation (DCV) method.
When you submit the order, multiple DCV approval emails will be sent instantly to any emails in the domain's WHOIS record, all five of the generic emails, and any emails pulled from the DNS TXT record for _validation-contactemail.fastssl.com.