gistfile1.sh

#!/bin/sh

domain=sample.com

new_user=$1
password=$2

if [ "$password" = "" ]; then
	echo Usage: $0 user password
	exit 1
fi

mailaddr=${new_user}@${domain}

# dovecot
cd /etc/dovecot
digest=`doveadm pw -s DIGEST-MD5 -u ${mailaddr} -p ${password}`
grep -v ${mailaddr} users > users.new
echo ${mailaddr}:$digest >> users.new

mv users user.`date +%Y%m%d-%H%M`
mv users.new users
chown vhosts:vhosts users

service dovecot reload

# postfix 
cd /etc/postfix 
echo ${password} | saslpasswd2 -p -u ${domain} ${new_user} -n
# reload conf
postmap vmailbox
service postfix reload

exit 0