Following the tutorial here: http://arstechnica.com/business/2014/03/taking-e-mail-back-part-3-fortifying-your-box-against-spammers/
see output from opendkim-genkey, it create a private and a public file, the public file is what to put in dns
Following the tutorial here: http://arstechnica.com/business/2014/03/taking-e-mail-back-part-3-fortifying-your-box-against-spammers/
see output from opendkim-genkey, it create a private and a public file, the public file is what to put in dns