Hi, 
i'd like to use sssd in ldap mode against Active Directory so I have defined:
id_provider = ldap
auth_provider = ldap

Yes krb5 would be better but i only have a BIND account and cannot add computer 
objects.
This 'should' be possible - it works with nslcd. As I don't have Posix 
attributes i'm using:
ldap_id_mapping = true
fallback_homedir = /home/%d/%u
default_shell = /bin/bash

sssd can bind with LDAPS and can seem to get user info from the domain:
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_process_message] (0x4000): 
Message type: [LDAP_RES_SEARCH_ENTRY]
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_parse_entry] (0x1000): 
OriginalDN: [CN=Some User,OU=Admin Accounts,DC=dev,DC=somedomain,DC=com].
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_process_result] (0x2000): 
Trace: sh[0x7f5d15fbc030], connected[1], ops[0x7f5d1639d140], 
ldap[0x7f5d15fb5cd0]
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_process_message] (0x4000): 
Message type: [LDAP_RES_SEARCH_RESULT]
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_get_generic_op_finished] 
(0x0400): Search result: Success(0), no errmsg set
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_op_destructor] (0x2000): 
Operation 3 finished
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_search_user_process] (0x0400): 
Search for users, returned 1 results.
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_search_user_process] (0x4000): 
Retrieved total 1 users

The UID mapping seems to succeed:
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [ldb] (0x4000): start ldb 
transaction (nesting: 0)
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_user] (0x0400): Save user
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_user] (0x4000): Failed to 
retrieve UUID [2][No such file or directory].
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_user] (0x0400): SID 
S-1-5-21-3970895924-989261097-3267629119-1443 does not belong to any known 
domain
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_get_primary_name] (0x0400): 
Processing object someuser
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_user] (0x0400): 
Processing user someuser
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_user] (0x1000): Mapping 
user [someuser] objectSID [S-1-5-21-3970895924-989261097-3267629119-1443] to 
unix ID

But it gets no further with this message:
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_get_idmap_primary_gid] 
(0x0080): no primary group ID provided
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_user] (0x0020): Cannot 
get the GID for [someuser] in domain [extdev].
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_user] (0x0020): Failed to 
save user [someuser]
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_users] (0x0040): Failed 
to store user 0. Ignoring.

Have tried against two different domains with identical result ( one a cleanly 
installed 2012R2 domain ).

Any ideas what I'm doing wrong? Is this possible? Various (old) posts suggests 
it is.

This was first (incorrectly) posted to sssd-devel, Jakub Hrozek updated and 
told me to define ldap_idmap_default_domain_sid so sssd no longer reports this:
(Fri Aug 26 13:34:10 2016) [sssd[be[dev]]] [sdap_save_user] (0x0400): SID 
S-1-5-21-3970895924-989261097-3267629119-1443 does not belong to any known 
domain

Thanks in advance!!
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