[ingo] case sensitive user names and ingo mailfilter

[dev at stean.ch]

hello all,

i am using maildrop as mail filtering backend for ingo, the path
for the filenames of these filters is build with the user its
name (%u placeholder).

recently some user complained about that even if the spam filter
was activated (and so it is according horde preferences) but not
working at all. the maildrop filter file was missing where it
should have been.

soon i found out that the user is logging in by typing the user
name with uppercase letters, so for example instead of
tom at somewhere.com typed Tom at somewhere.com

what ingo then did is writing the mailfilter file to a sub
directory named Tom instead of tom. looks like horde itself uses
as user id what ever comes but handles it case insensitive,
however running a unix system behind, this will of course not work
for files.

should there be a correction made in the backend handler of ingo
to use always lowercase?

regards, stephan