[CentOS] MailScanner With One vs Two Postfix Instances

Chris Mauritz wrote:
> I'm a bit curious what benefit you achieve from adding the complexity of 
> mysql into the mix.  Does it improve performance?  Is there some feature 
> that you need that is only available if you hook in a database back-end?

Probably so it's easier to administer user accounts using a web 
interface or any other type of UI.  I doubt it's primarily for 
performance reasons.  Personally, I prefer an LDAP backend for that purpose.