[Dovecot] folder creation with dots in name

[Marko Weber | Salondigital.de]

Hello,

i am using dovecot 1.1.7-r1
when i try to create a new folder in incoming with dot in name ist not 
working fully.
when i try to create the folder  domain.de,
dovecot create    domain            (gray and not accessable)
                             |
                             ------> de    (the de is also created as 
folder and is accessable)

any ideas why this happen ?

thanks for any hints

marko

!DSPAM:173,49a6f90f68526583516863!