Take the 2-minute tour ×  I'm having to set up an email server
for a class and have installed exim (using Maildir mailbox
format) and sent myself an email. I can't read the email though:
I have set the MAIL variable to ~/Maildir but when I try to open
mail I get  pad-20@PAD-20:~$ mail mail: /home/pad-20/Maildir/:
Is a directory  I also changed the settings in
/etc/pam.d/{login,su,sshd} according to this guide, but all
that's done is give me a new email summary when I log in.  The
strange thing is that frm works:  pad-20@PAD-20:~$ frm     Test
2 from telnet  (That's the subject of the test email I sent).
There is another question on askubuntu that is similar, except
that their problem was fixed after setting the MAIL variable
correctly.  share|improve this question add comment  1 Answer
up vote 6 down vote accepted  The traditional unix /usr/bin/mail
only supports mailbox format. It's older than maildir, after
all.  Under Ubuntu, /usr/bin/mail has two alternatives:
heirloom-mailx Install heirloom-mailx and b