Description
If the Namespace contains a char it need to append the delimiter to the namespace.
See: http://www.ietf.org/rfc/rfc2342.txt
Example 5.5:
===========
< A server that supports only the Personal Namespace, with a
leading prefix of INBOX to personal mailboxes and a hierarchy
delimiter of ".">
C: A001 NAMESPACE
S: * NAMESPACE (("INBOX." ".")) NIL NIL
S: A001 OK NAMESPACE command completed