It appears that the SSL certificate for www.darktable.org expired November 11, 2016. (Today is November 14, 2016.)
Latest entry for www.darktable.org: https://crt.sh/?id=28259652 All entries for www.darktable.org: https://crt.sh/?q=www.darktable.org ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org