Проверка DKIM-записи домена

DNS-запись mail._domainkey.sfiholding.ru с типом TXT опубликована:
v=DKIM1; k=rsa; s=email;
p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3n+GTy0po8+nq6960Z4WHCgkzIzDykFO9W6k6xkj6EIUntjmREaFcZPH8AR1rXLniJJMeKsivJ560lgZlTI9dpjeTZuQbVQFWj4JWtPhA2I+R7UfQ7RHxdHm5TO3fO9but0N7dIDh4clyKzeGERDZkbeh3qzllSLBOi5CfGK0jNUbjOymoK4SlobG8xWsKRSCcLIvkWYEc3+
fP0nYmO4Orcn5ZquqFkYpE/Eo/uu3MD7kS+oVSm6qPbUYuWWryqo8NPV79bB+XtQOjsEA9Vb/dQYXhLtgdKThEw8Dg36+JskNMYczg0bQy763R78MQhOQf7W7zHxvMylRfaj7scgMQIDAQAB