Thank you very much for getting back to me!
me@mx:~$ ls -dl /mnt
drwxr-xr-x 3 vmail vmail 4096 Mar 25 18:39 /mnt
me@mx:~$ ls -dl /mnt/mail
drwxr-xr-x 8 vmail vmail 8 Mar 25 22:24 /mnt/mail
me@mx:~$ ls -dl /mnt/mail/vmail1
drwxr-xr-x 3 vmail vmail 3 Mar 25 19:02 /mnt/mail/vmail1
Should it be 0755 all the way down?