KeyTable            file:/etc/dkimkeys/keytable
SigningTable        refile:/etc/dkimkeys/signingtable
InternalHosts       refile:/etc/dkimkeys/certclients
ExternalIgnoreList  refile:/etc/dkimkeys/certclients

Mode                sv
Umask               0002
Socket              local:/var/spool/postfix/opendkim/submission.sock

On-Default          reject