[CentOS] [OT] List of all email users

Jussi Hirvi wrote:
> For real-world use, I guess the source files (in my case aliases,
> virtusertable) should be prepared first - the list will include unwanted
> users like "bin" or "mysql", mailing list name defined in virtusertable, and
> possibly other strange things too.
>   


and what about the user accounts in /etc/passwd ?