Is there an automated way to configure postfix/dovecot as a basic mail server?

Any time I upgrade my web server, mail is always the part I find a pita. Setting up the mailboxes etc. The syntax of the config changes all the time between distros, file locations are different etc so can't import the old config either. Tutorials also tend to be hit and miss as you really need to find one that is specific to your distro. Mail is usually what I spend the most time on in the setup process.

Is there some kind of script or tool I can use that automates this stuff better? Kind of like cpanel but without the price tag.