On Sat, 11 Mar 2017 09:47:07 +0100 Stephan von Krawczynski <skraw at ithnet.com> wrote: > fork: Nicht genügend Hauptspeicher verfügbar Something is seriously wrong on your system, as Claws Mail doesn't seem to be have enough memory available to fork its process into two, in order to create a connection in the background. Regards, -- Andrej