When the filter log size limit is the default "unlimited", only about 15 lines are shown in the log, with no scrolling. Saving the log to file confirms the log is quite small.
The actual limit when the dialog shows "unlimited" is 1KB. When logged out of KDE, I edited ~/.kde/share/config/akonadi_mailfilter_agentrc and removed the whole [FilterLog] section. When I started kmail again (embedded within kontact) and started logging filter activities, this line was included in the [FilterLog] section: maxLogSize=1024 Clicking the arrows in the dialog box up and down, when the dialog returns to "unlimited", the rc file returns to 1024 for the maxLogSize value.
I already fixed a bug about limited size. But it's right unlimited doesn't work well. Will fix it soon
Git commit 801013e0867d7bf3f27ddac8203b4b4eb7232486 by Montel Laurent. Committed on 16/05/2012 at 18:13. Pushed by mlaurent into branch 'master'. Fix Bug 298985 - Log size limit "unlimited" is too small FIXED-IN: 4.8.4 M +11 -5 mailfilteragent/filterlogdialog.cpp http://commits.kde.org/kdepim/801013e0867d7bf3f27ddac8203b4b4eb7232486
Git commit f3ffd5a18e4ad6299caaf20ec27d4b198770e4bf by Montel Laurent. Committed on 16/05/2012 at 18:13. Pushed by mlaurent into branch 'KDE/4.8'. Fix Bug 298985 - Log size limit "unlimited" is too small FIXED-IN: 4.8.4 (cherry picked from commit 801013e0867d7bf3f27ddac8203b4b4eb7232486) Conflicts: mailfilteragent/filterlogdialog.cpp M +11 -4 mailfilteragent/filterlogdialog.cpp http://commits.kde.org/kdepim/f3ffd5a18e4ad6299caaf20ec27d4b198770e4bf