Catch all emails sent on a dev box and deliver them to the 'vagrant' user's mailbox

vagrant-local-email.sh

#
# Many apps send email. In a dev environment, we generally don't want those emails
# to get out. However, we still want our app to think it's sending mail and we want
# to verify that emails are being sent, with the correct content and to the correct
# recipients.
#
# This setup solves that problem by delivering all out-bound emails to the local
# "vagrant" user's mailbox.  You can then read the emails using the "mutt" command.
#
# Most if this is copied from:
#  http://www.intracto.com/nl/blog/dealing-e-mail-development-environment
#  http://www.elho.net/mutt/maildir/
#

echo "\n--- Apt Update\n"
apt-get update

echo "\n--- Pre-Configuring Postfix\n"
echo "postfix postfix/mailname string vagrant" | debconf-set-selections
echo "postfix postfix/main_mailer_type string 'Internet Site'" | debconf-set-selections

echo "\n--- Installing Packages\n"
apt-get install -y postfix postfix-pcre mutt

# Postfix (Catches all outgoing email, puts it in the 'vagrant' user's mailbox. Use mutt to read it.)
echo "\n--- Configuring Postfix\n"
echo ""                                                                 >> /etc/postfix/main.cf
echo "virtual_alias_domains ="                                          >> /etc/postfix/main.cf
echo "virtual_alias_maps = pcre:/etc/postfix/virtual_forwardings.pcre"  >> /etc/postfix/main.cf
echo "virtual_mailbox_domains = pcre:/etc/postfix/virtual_domains.pcre" >> /etc/postfix/main.cf
echo "home_mailbox = Maildir/"                                          >> /etc/postfix/main.cf

echo "/@.*/ vagrant"    > /etc/postfix/virtual_forwardings.pcre
echo "/^.*/ OK"         > /etc/postfix/virtual_domains.pcre

# Mutt (for reading email)
echo "\n--- Configuring Mutt\n"
echo ""                                                                                                 >> /etc/Muttrc
echo "set mbox_type=Maildir"                                                                            >> /etc/Muttrc
echo "set folder=\"~/Maildir\""                                                                         >> /etc/Muttrc
echo "set mask=\"!^\\.[^.]\""                                                                           >> /etc/Muttrc
echo "set mbox=\"~/Maildir\""                                                                           >> /etc/Muttrc
echo "set record=\"+.Sent\""                                                                            >> /etc/Muttrc
echo "set postponed=\"+.Drafts\""                                                                       >> /etc/Muttrc
echo "set spoolfile=\"~/Maildir\""                                                                      >> /etc/Muttrc
echo "mailboxes \`echo -n \"+ \"; find ~/Maildir -maxdepth 1 -type d -name \".*\" -printf \"+'%f' \"\`"  >> /etc/Muttrc
echo "macro index c \"<change-folder>?<toggle-mailboxes>\" \"open a different folder\""                 >> /etc/Muttrc
echo "macro pager c \"<change-folder>?<toggle-mailboxes>\" \"open a different folder\""                 >> /etc/Muttrc