On Wed, 5 Nov 2014 13:03:14 +0100 Martti Kühne <mysatyre@xxxxxxxxx> wrote: > > What is insecure when doing it? > > You cannot tell or know. But your way an attacker (they usually know > more than you or I) has the advantage of knowing exactly which of the > distros he is targeting. If somebody should fear an attack, than it's wiser even not to mention what version of Claws Mail, GTK and what architecture is used. This can be done by the account settings. Configuration > Edit accounts... > Edit selected account > Send > [ ] Add user agent header Regards, Ralf