Postfix with support for Mysql

Hello, i have installed Postfix with support for Mysql, i want to write my virtual file over a Mysql table. I have 5 servers with postfix and is very simple shared the conf with the 5 servers. All works very very well, but if the Server of Mysql y down the emails are rejected and the smtp server

Cluster of postfix

Hello, i have two postfix servers, and when i have to do any change in virtual file or in aliases file i must to do the same change in the 2 servers. Can someone say me how can i do my job more confortable and only do one time. Thank you.