We have a series of write only directories with 2733 access code under unix. They all have the same group, which is forced in samba. When trying to drop a file into the directory from an XP Windows client, it fails with an Access Denied probably due to a Write Protected directory. This works on a samba 3.0.10 system. The share information is: [dropbox] comment = Faculty Dropboxes path = /a7/camslab/dropbox browseable = no writeable = yes guest ok = no create mask = 0444 force group = dropbox Here is the log information on it: [2008/09/05 08:41:03, 2] auth/auth.c:check_ntlm_password(309) check_ntlm_password: authentication for user [test] -> [test] -> [test] succeeded [2008/09/05 08:41:03, 1] smbd/service.c:make_connection_snum(1033) ci342-01 (165.95.5.184) connect to service dropbox initially as user test (uid=848, gid=400) (pid 30448) [2008/09/05 08:41:09, 2] smbd/open.c:open_directory(2092) open_directory: unable to create ptedford. Error was NT_STATUS_OBJECT_NAME_COLLISION If you look at the folder security information under windows XP, under advanced it shows "write & execute" under the 3.0.10 version of samba and "special" with the current 3.0.28 version. And in the special information the read attributes box is not checked on the 3.0.28 version of samba.