Pop account download sent mails

Pop account download sent mails

Hi,

I configured zoho to get mail from another account vi pop, I noticed that zoho downloaded only few mail from sent folder.
Why zoho don't get all mails?
I have other problem, I can't get domainkey authenticated appear this message " DomainKeys are not enabled, as the text record validation has failed. Please try again."

Regards,

Ernesto