echo "-------------------------------------------------"
echo -e "------------ ${BLUE}CHECK MAIL ALIAS CONFIG${NC} ------------"
echo -e "-------------------------------------------------\n"

# This does not check if send mail works and if alias have been reloaded
# Check /etc/mail/aliases config file
echo -e "Check ${BLUE}MAIL ALIAS${NC} config file /etc/mail/aliases"

# Check if root alias is configured
grep -q -E "^[[:space:]]*root:?[[:space:]]*${MAIL_ALIAS_ROOT}[[:space:]]*$" /etc/mail/aliases

# Return Code
RC=$?

# Root alias not configured
if [ $RC -ne 0 ]
then
	MAIL_ALIAS_CONFIG_CHECK_FAILED="${MAIL_ALIAS_CONFIG_CHECK_FAILED} root alias NOT CONFIGURED or WRONG mail address, check /etc/mail/aliases and reload aliases"
	echo -e "${RED}Mail alias root NOT CONFIGURED or WRONG mail address : check KO${NC}\n"
# DRoot alias configured
else
	# Check multiple root alias line in the file
	line_number=$(grep -E "^[[:space:]]*root:?" /etc/mail/aliases |wc -l)
	
	# If linue_number different than 1
	if [ $line_number -ne 1 ]
	then
		MAIL_ALIAS_CONFIG_CHECK_FAILED="${MAIL_ALIAS_CONFIG_CHECK_FAILED} more than 1 line for root mail alias, check /etc/mail/aliases and reload aliases"
		echo -e "${RED}More than 1 line for root mail alias : check KO${NC}\n"
	else
		echo -e "${GREEN}Mail alias root CONFIGURED : check OK${NC}\n"
	fi
fi