On my previous system, I had used qmail
(netqmail actually, which is qmail with
some patches). Qmail is moderately difficult to set up and in its 3 years lifespan
on my system, it has broken down on several occasions. That’s why I decided
to use another mail server when I moved my domains to a different system.
Because the Courier IMAP server has never let
me down before, I decided to give the Courier Mail Server a chance. Lots of
people are using Courier IMAP to access their mail but Exim,
Postfix or Qmail to accept incoming emails.
Even the Gentoo Wiki contains various
HowTos for these combinations, but not a single one for a homogenous Courier
setup. After trying out Courier, I don’t see why, so this is my attempt to rectify
the situation (and to remember what needs to be done for the next time I’m moving
my domains to another system!)