My users login in to windows using DSfW and drives are mapped to CIFS connections on other servers. My problem is users with a dot in their username can not login in to CIFS shares. Users without dots in their name can login fine. The following error shows up in the cifs.log file.

CIFS[21385]: CRITICAL: AUTH: Failed to fetch credentials of User : cn=Test1\.Test2,OU=XXX,OU=YYY,O=ZZZ Nmasldap-error : -1652 , ProxyUser- cn=cifsProxyUser-server,ou=YYY,o=ZZZ . Check Configuration

Any Ideas?