signingHostedZone
The hosted zone where Amazon SES publishes the DKIM public key TXT records for this email identity. This value indicates the DNS zone that customers must reference when configuring their CNAME records for DKIM authentication.
When configuring DKIM for your domain, create CNAME records in your DNS that point to the selectors in this hosted zone. For example:
selector1._domainkey.yourdomain.com CNAME selector1.<SigningHostedZone>
selector2._domainkey.yourdomain.com CNAME selector2.<SigningHostedZone>
selector3._domainkey.yourdomain.com CNAME selector3.<SigningHostedZone>