> Both dependencies are resolved (as answered by yum provides > --enablerepo=centosplus ...) by postgresql-libs (for libpq.so.4) and > mysql (for libmysqlclient.so.15) ... but it seems you've excluded some > packages from your centosplus repo config file .... > Be aware that the newer postfix package needs mysql5 .... consider this > prior to upgrade ! Yes. More info at: http://bugs.centos.org/view.php?id=2195 And thanks to all CentOS development team to comply with community needs. :)