Creating the base_dir
The base_dir is the directory in which the directories for all domains and users will be created.
To create the base_dir and set proper permissions execute the following commands:
mkdir /srv/mail cd /srv/mail mkdir 0 1 2 3 4 5 6 7 8 9 a b c d e f g h i j k l m n o p q r s t u v w x y z chmod 771 /srv/mail chgrp -R mail /srv/mail chmod 751 /srv/mail/*