Mail isn’t very useful unless it’s delivered successfully. This chapter looks at delivering mail addressed to local mailboxes, both for local delivery and for redelivery elsewhere.
Local login users usually receive mail in mbox format in ~/Mailbox and ~/.mail. Or they receive mail in Maildir format in ~/Maildir/.
In the simplest case, a user’s .qmail file needs to contain only a single line to specify the user’s mailbox, either the mbox format mailbox:
# deliver into $HOME/Mailbox ./Mailbox
or the Maildir:
# deliver into a file in $HOME/Maildir/ ./Maildir/
I suggest that every shell user should have a .qmail file (add it to the set of skeleton files that your adduser procedure creates), but for users who don’t, be sure to set a reasonable default as the argument to qmail-start in /service/qmail/run, as described in Chapter 3.
Although Maildirs have all sorts of advantages over mboxes, they are
not supported in many mail clients. For the
elm and pine
clients, qmail provides small scripts, elq and
pinq, which move mail from the Maildir into an
mbox, then run the client. These use the
maildir2mbox utility, which requires three
environment variables to be set.
MAILTMP is the name of a temporary file used to hold a copy of the updated mbox, which must be on the same filesystem as $MAIL, ...