Something

#!/bin/sh
for dir in `ls /home/vpopmail/domains/domain1`
do
cp -R /etc/skel/Maildir /home/vpopmail/domains/domain1/$dir
done;


for dir in `ls /home/vpopmail/domains/domain2`
do
cp -R /etc/skel/Maildir /home/vpopmail/domains/domain2/$dir
done;