root@server:~# nano /etc/fstab
tmpfs /var/lib/amavis/db  tmpfs noatime,nodev,nosuid,uid=amavis,gid=amavis,mode=0750,size=64m 0 0
tmpfs /var/lib/amavis/tmp tmpfs noatime,nodev,nosuid,uid=amavis,gid=amavis,mode=0770,size=512m 0 0