Having an issue with joining NS to domain, I see the server in MS AD but not able to see any user, I am seeing the following in the message logs;
Jan 27 15:08:42 ACTPROXY01 httpd: [ERROR] NethServer\Tool\UserProvider: Account provider connection reset by peer: check if the server supports SSL/TLS connections
Jan 27 15:08:42 ACTPROXY01 httpd: [ERROR] Connection reset by peer
Jan 27 15:09:07 ACTPROXY01 sshd[3657]: Did not receive identification string from 10.1.110.5
Also seeing this (AccountProvider_Error_255) under account provider in GUI.
NetBIOS domain name: CORPORATE
LDAP server: 10.1.10.2
LDAP server name: ACTSRVDC02.corporate.com
Realm: CORPORATE.COM
Bind Path: dc=CORPORATE,dc=COM
LDAP port: 389
Server time: Fri, 27 Jan 2017 16:38:39 EST
KDC server: 10.1.10.2
Server time offset: -31
Last machine account password change: Fri, 27 Jan 2017 14:21:11 EST
You should configure one, or use clear text connections (security danger): change ldaps:// to ldap:// under “Accounts provider > advanced settings”.