#!/bin/sh -e

if [ ! -e /etc/mailname ]; then
	hostname --fqdn >/etc/mailname
	echo "System configured to receive mail for `hostname --fqdn` (in /etc/mailname)."
fi

# Gymnastics to convice zmailer to use /etc/aliases
# or provide /etc/aliases it if not found.
if [ ! -L /etc/zmailer/db/aliases ]; then
	if [ -f /etc/aliases ]; then
		echo "Generating Symlink to use /etc/aliases for aliasing"
		rm /etc/zmailer/db/aliases
	else
		echo "Installing new /etc/aliases from zmailer sample"
		mv /etc/zmailer/db/aliases /etc/aliases
	fi
	ln -s ../../aliases /etc/zmailer/db/aliases
fi

# We need the Zmailer group to signify trusted users (for mailing lists etc)
# Provisionally we do it this way until the day comes that "addgroup" will
# support this functionality.

if ! grep -q "^zmailer:" /etc/group; then
	echo "zmailer:*:47:root,list,uucp,daemon" >>/etc/group
fi

# Scan for Mandatory entries in /etc/aliases
# postoffice MAILER-DAEMON postmast nobody
# otherwise bad things (tm) result.

for i in postmaster postoffice MAILER-DAEMON postmast nobody; do
	if ! grep -q "^$i:" /etc/aliases; then
		echo "Adding Entry for $i in /etc/aliases"
		echo -e "\n$i: root" >>/etc/aliases
	fi
done