It happens when I am using Gmail as an SMTP server. In the gnome bug report (linked above by Tien Nguyen) someone else also mentioned Gmail.
-- Evolution 2.22.1 on Hardy can not send JPEG attachment https://bugs.launchpad.net/bugs/225846 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs