Hi All, I have configured Samba 3.0.23 to work with Active Directory. Based on all the tests shown here: http://us3.samba.org/samba/docs/man/Samba-Guide/unixclients.html#adssdm Things are working as expected. Most machines and users are working as expected. I do have some Windows machines on another subnet, NOT joined to the domain that are giving me grief. Going to Start->Run->\\ip.of.samba.server I get the following error: The format for the computer name is invalid I can ping the samba server without problems. Reviewing the Samba logs I see: "pam auth crap domain" messages in winbind.log In the machine.log file I see: [2007/10/23 03:05:17, 3] auth/auth.c:check_ntlm_password(221) check_ntlm_password: Checking password for unmapped user [domain]\[acronis]@[COMPUTER] with the new password interface [2007/10/23 03:05:17, 3] auth/auth.c:check_ntlm_password(224) check_ntlm_password: mapped user is: [domain]\[acronis]@[SORTER] [2007/10/23 03:05:17, 3] smbd/sec_ctx.c:push_sec_ctx(208) push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1 [2007/10/23 03:05:17, 3] smbd/uid.c:push_conn_ctx(345) push_conn_ctx(0) : conn_ctx_stack_ndx = 0 [2007/10/23 03:05:17, 3] smbd/sec_ctx.c:set_sec_ctx(241) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1 [2007/10/23 03:05:17, 3] smbd/sec_ctx.c:pop_sec_ctx(339) pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0 [2007/10/23 03:05:17, 2] auth/auth.c:check_ntlm_password(319) check_ntlm_password: Authentication for user [acronis] -> [acronis] FAILED with error NT_STATUS_INVALID_COMPUTER_NAME [2007/10/23 03:05:17, 3] smbd/error.c:error_packet(146) error packet at smbd/sesssetup.c(99) cmd=115 (SMBsesssetupX) NT_STATUS_INVALID_COMPUTER_NAME Any thoughts or suggestions would be appreciated. Shawn