OpenDKIM configuration/installation for postfix 2.10 on RHEL 7.2?

Hello fellow Red Hat users,

I am building a new mailrelay environment using postfix 2.10 on RHEL 7.2, one of a the features we want is DKIM. Until now I failed to find a complete repository for opendkim and the dependencies.

All howtos refer to Centos, but we need RHEL.

Any hints on how to implement DKIM with postfix?

Kind regards,

Jan Gerrit Kootstra