[exim] sa-exim and save directories

Hi all,

In the config file /etc/exim4/sa-exim.conf the attributes to save
messages are :

SApermrejectsave: /var/spool/sa-exim/SApermreject

it is posible to specify a value like :
$home/mail/.sa-exim/SApermreject ?

thanks in advance

Guy