[SSSD-users] Re: ����: Re: The Direct Integration between SSSD and Active Directory , Access Control via GPO, logon to server failed uncertain

only a few logs in gpo_child.log,see below:
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(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [main] (0x0400): gpo_child started.
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [main] (0x0400): context initialized
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x0400): cached_gpt_version: 1179676
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x4000): smb_server length: 33
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x4000): smb_server: smb://MyDC.mydoman.com
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x4000): smb_share length: 7
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x4000): smb_share: /SysVol
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x4000): smb_path length: 62
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x4000): smb_path: /mydomain.com/Policies/{241B7E35-2AA1-4004-A82B-DA333FE6DC2C}
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x4000): smb_cse_suffix length: 49
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [unpack_buffer] (0x4000): smb_cse_suffix: /Machine/Microsoft/Windows NT/SecEdit/GptTmpl.inf
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [main] (0x0400): performing smb operations
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [copy_smb_file_to_gpo_cache] (0x0400): smb_uri: smb://vwsr003105003.mydomain.com/SysVol/mydomain.com/Policies/{241B7E35-2AA1-4004-A82B-DA333FE6DC2C}/GPT.INI
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [copy_smb_file_to_gpo_cache] (0x0020): smbc_getFunctionOpen failed [110][Connection timed out]
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [perform_smb_operations] (0x0020): copy_smb_file_to_gpo_cache failed [110][Connection timed out]
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [main] (0x0020): perform_smb_operations failed.[110][Connection timed out].
(Tue Jul 11 15:08:25 2017) [[sssd[gpo_child[50647]]]] [main] (0x0020): gpo_child failed!

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Then I tried to test \mydomain.com samba share by using smbclient -L mydc.mydomain.com, looks like it works.