system: opensuse leap 15.0, KDE 18.04.3, plasma 5.13.4, fw 5.49.0, Qt 5.11.1, kernel 4.18.5-1 issue kmail: upating from kde apps 18.04 to 18.08 from open suse repository, sending email via smtp is not more possible. receiving via pop3 is ok. http://download.opensuse.org/repositories/KDE:/Applications/KDE_Frameworks5_openSUSE_Leap_15.0/ returning to kde apps 18.04, receiving (pop3) and sending (smtp) is fine. http://download.opensuse.org/repositories/KDE:/Applications:/18.04/openSUSE_Leap_15.0/
system: opensuse leap 15.0, KDE 18.08.1, plasma 5.13.5, fw 5.49.0, Qt 5.11.1, kernel 4.18.6-1 seems to be solved in kontact 5.9.1