In the following guide, I will explain the procedure on how to move the email and website directory of a ISPConfig 3 installation to a new partition. This might become handy when your current partition runs out of space. I will use a bind mount for this, a symlink will not work here as ISPConfig checks path for symlink attacks, so if the website or email path contains a symlink, ISPConfig will reject to write to that directory. In this example, I will move the www and email directory to the /home partition. You dont have to move both partitions together, so moving just the email or web partition will work as well.