See screenshot. This dialog is open when I click on "Use pipelining for faster mail download" option. The message in this dialog refers to "Check What the Server Supports" button, but in this configuration dialog there is just a "Auto Detect" button. "Check What the Server Supports" is a old button name, but I don't if it checks this option. Reproducible: Always I'm using KDE Applications 15.12.
Created attachment 97040 [details] Screenshot "Check What the Server Supports" is a old button name, but I don't know if it checks this option.
You're right I will change it.
Git commit 6d5314a654f1cda07ea7a49c7bfa1c19b107597e by Montel Laurent. Committed on 06/02/2016 at 08:29. Pushed by mlaurent into branch 'master'. Fix Bug 359051 - Incorrect button name in string message FIXED-IN: 5.2 M +2 -2 resources/pop3/accountdialog.cpp http://commits.kde.org/kdepim-runtime/6d5314a654f1cda07ea7a49c7bfa1c19b107597e