A management company that leaves notices on the doors of a residence when mortgage payments fall behind is not an indirect debt collector for the purposes of the statute.
http://media.ca7.uscourts.gov/cgi-bin/rssExec.pl?Submit=Display&Path=Y2018/D08-10/C:17-2811:J:Ripple:aut:T:fnOp:N:2200827:S:0