Install and Configure the Vacation Option This installation is for Ubuntu 9.10 but should work for just about any Linux distro.  The vacation package is nice in that you can create an automatic message for when you are not available. You will need to install a number of packages. sudo apt-get install libmail-sender-perl ...

The vacation program is not built specifically for Postfix.  So you will need to set it up separately from Postfix and then integrate it. The vacation feature allows you to configure a message that will be returned to the sender when you are out of the office.  If you are using a CentOS version you will not find vacation in any ...