The message viewer shows only the Qt print preview dialog, whereas it used to show the KDE print dialog. No it is not possible to select the printer anymore.
SVN commit 1123957 by tokoe: Use QPrintDialog directly to be consitent with all the other KDE-PIM applications BUG: 230140 M +9 -5 viewer_p.cpp WebSVN link: http://websvn.kde.org/?view=rev&revision=1123957