If you have vm-pop3d (mbox) and get the following error when creating a domain:
Parent directory does not allow write, or one of the directories didn't allow search (execution) permission
Try typing:
chmod 1777 /var/spool/virtual
For version 1.32.4, the error message will be more clear, including the path name.
If you ran into this error, then next time you try to create a domain, DA will say it already exists. To solve that, go to: Admin Level → DNS Admin
and delete the domain in question, then you can try again.