I got the same problem. After updating to Kmail 4.7.0 sending mails does not work anymore. Tried also the suggestions given in the comments 3 (recreating the settings for outgoing mail) and 7 (deleting ~/.local/share/.local-mail.directory). But none of them worked. The smtp server is mail.gmx.net
I got the same problem. After updating to Kmail 4.7.0 sending mails does not work anymore. Tried also the suggestions given in the comments 3 (recreating the settings for outgoing mail) and 7 (deleting ~/.local/ share/. local-mail. directory) . But none of them worked. The smtp server is mail.gmx.net