Changes

  yum --enablerepo=smecontribs install smeserver-tftp-server

  yum --enablerepo=smecontribs install smeserver-tftp-server

or if you don't have the Centos base repository enabled

'''Note:''' this will download and install the latest tftp-server from the Centos base repository, so if you don't have that repository ebnabled, please use the following command

  yum --enablerepo=smecontribs --enablerepo=base install smeserver-tftp-server

  yum --enablerepo=smecontribs --enablerepo=base install smeserver-tftp-server