Correct configuration for mail server on Ubuntu with spf and dkim authentication
          mysql          mail          ubuntu          postfix          mailer          mysql-server          spf          dkim          dovecot          mail-server          roundcube          milter          inet          postfix-helper          postfix-relay-docker          dovecot-configuration          dovecot-utils          vmail          postfix-policy-server          virtual-users      
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            Updated
            Jan 18, 2017