centosplus contains postfix-mysql rpm, so just enable that repo and use yum to install it.
Not provided int CentOS 5:
[root@ares Desktop]# yum --enablerepo=centosplus install postfix-mysql Loading "installonlyn" plugin Loading "priorities" plugin Loading "protectbase" plugin Loading "fastestmirror" plugin Setting up Install Process Setting up repositories rpmforge 100% |=========================| 1.1 kB 00:00 base 100% |=========================| 1.1 kB 00:00 updates 100% |=========================| 951 B 00:00 centosplus 100% |=========================| 951 B 00:00 addons 100% |=========================| 951 B 00:00 extras 100% |=========================| 1.1 kB 00:00 Loading mirror speeds from cached hostfile Reading repository metadata in from local files primary.xml.gz 100% |=========================| 22 kB 00:00 ################################################## 33/33 0 packages excluded due to repository priority protections 0 packages excluded due to repository protections Parsing package install arguments Nothing to do
[root@ares Desktop]# cat /etc/redhat-release CentOS release 5 (Final)
I don't understand why a server-oriented distro like CentOS (RHEL) doesn't provide support to _most_ popular opensource database to the _most_ popular opensource SMTP server. I'm very stunned with it.