On Sun, 13 Mar 2016 09:45:06 +0000 James <lista at xdrv.co.uk> wrote: > On 11/03/2016 15:17, Stephan von Krawczynski wrote: > > > zfs set sync=disabled ? > > Only if you are happy to loose data on power failure. I don't know the actual setup, but if you have no UPC you shouldn't host email services anyway. -- Regards, Stephan