That’s what i would like to do, but where would i find that information?

In the users table isn’t there, or I’m not searching in the correct place.

Something like /var/log/roundcubemail/userlogins perhaps?

-- 
  Hannu Hirvonen (hh@uwasa.fi, http://www.uwasa.fi/~hh/)
  Computer Centre, University of Vaasa, BOX 700, FI-65101 VAASA, Finland