Gentlemen, good morning .... already a few days more I try I can not configure the service SMTP Sparkpost .... already tried everything and not going at all ..... Use the Mautic, he says the connection is ok, send as email does not arrive in my box in zoho ...... any idea what might be please?

I noticed in my cx in zoho that is able to dkim key, but do not have the dkim key on my dns server ..... would be what is preventing? If so, how do I generate another key?

Thanks for everything!