[Samba] maximum username length

[Markus Schabel]

Hello!

We encountered a problem with our (LDAP) usernames: It seems that
windows truncates uids to 20 characters and since our ~4000 users
follow the uid-schema givenname.lastname we have some uid's that are
(much) longer than 20 characters.

Does anybody know if this is a samba or a windows problem and how we
can fix it (without changing the actual uid's that work any other
service without problems: smtp/pop/imap/ssh/ftp/http/...)

best regards
Markus