Gmail users can get virtually unlimited email addresses by using
$firstname.lastname@example.org ("plus addressing").
I'd like to have that for my own mail server, which is running Postfix. The mailbox and alias data are stored in a MySQL database.
I suspect that the alias configuration needs to be modified, so that
email@example.com gets mapped to the
firstname.lastname@example.org mailbox, but I fail to find out how.
So, is it possible? How?