no mailbox associated?

[Marten Lehmann]

Hello,

I have created a mailbox within cyrus which works fine (in concerns of 
IMAP sessions). But when I'm trying to deliver messages into this 
mailbox using LMTP I always get:

SMTP error from remote mail server after RCPT TO:<test at test.de>: host 
x.x.x.x [x.x.x.x]: 550-Mailbox unknown.  Either there is no mailbox 
associated with this\n550-name or you do not have authorization to see 
it.\n550 5.1.1 User unknown

What does this mean?

 > lm
test at test.de (\HasNoChildren)

I also granted too much rights, but it still didn't work:

 > lam test at test.de
all a
anyone lrs

Regards
Marten