Re: Newbie question

[Giles Lean]

>    "home qmail: 962410407.609427 delivery 33:
> deferral:unable_to_open_./Maildir:_is_a_directory._(#4.2.1)/"

Presumably your delivery instruction says "./Maildir".  For maildir
delivery you need a trailing slash: "./Maildir/".

Regards,

Giles