I activated CIFS in iManager because we need access from Win2k3 server to OES2SP1 file server. eDir 8.8.4

A CIFS proxy user was created and we set the Default CIFS Policy to one user.
Added shares and started CIFS.

Logged in as administrator to W2k3 server we mount the share with the CIFS user. That works. I can access the files.
On same w2k3 server we log in as other user (administrator still logged in) mount the share, share gets connected but we don't see any files.
Back to administrator account and refrashing the share, no file are shown.

If we restart CIFS service the first user who connects sees and can access all files. And the same game when second user connects the share.

Log (/var/log/cifs/cifs.log) says:
Code:
Mar 19 10:46:50 g73li005 CIFS[20421]: ERROR: CODIR: EvaluateAccessRights returne
d error
Mar 19 10:46:50 g73li005 CIFS[20421]: ERROR: CODIR: EvaluateAccessRights returne
d error
Mar 19 10:46:50 g73li005 CIFS[20421]: ERROR: CODIR: EvaluateAccessRights returne
d error

Mar 19 12:16:35 g73li005 CIFS[24910]: CRITICAL: AUTH: Failed to fetch credential
s of User : cn=XXX,OU=resourcen,OU=XX,OU=de,O=XX      Nmasldap-error
: -601 , ProxyUser- cn=cifsProxyUser_XXX,ou=resourcen,ou=XX,ou=de,o=XXl . Check Configuration
Mar 19 12:16:35 g73li005 CIFS[24910]: CRITICAL: AUTH:   GetMD4Hash Failed.
Mar 19 12:16:35 g73li005 CIFS[24910]: WARNING: CODIR: Failed to authenticate Use
r : poeppels
Mar 19 12:16:35 g73li005 CIFS[24910]: CRITICAL: AUTH: tempSES->nwLoginError is -
601
I have only basic Linux skills and am not familiar with CIFS.

If anybody has some ideas I wouold be glad to try it.

Thanks, Stephan