ispconfig system created end of 2009 on CentOS. At that time you needed to download a version of postfix and compile it. I have been excluding postfix on updates. Trying to clean up the updates and found that there is a version of postfix in the centosplus repo. Also I have seen that you no longer compile a downloaded version of postfix in your Perfect Server setups. Can I replace the postfix of 1.5 years ago with the one from the centosplus repo without any hiccups? postfix from the centosplus repo supports mysql. Any thoughts? Thanks in advance. korbynn