I have installad on a Virtual Machine clearos-release-7-7.2.v7 with only active directory connector, imap e pop3 and smtp.
The problem is that smtp d'ont delivery mail. there the log file...

Nov 19 12:32:54 comune postfix/trivial-rewrite[6304]: warning: dict_ldap_lookup: /etc/postfix/imap-groups.cf: Search base 'ou=Groups,ou=Accounts,dc=system,dc=lan' not found: 32: No such object
Nov 19 12:32:54 comune postfix/trivial-rewrite[6304]: warning: ldap:/etc/postfix/imap-groups.cf: table lookup problem
Nov 19 12:32:54 comune postfix/trivial-rewrite[6304]: warning: dict_ldap_lookup: /etc/postfix/imap-groups.cf: Search base 'ou=Groups,ou=Accounts,dc=system,dc=lan' not found: 32: No such object
Nov 19 12:32:54 comune postfix/trivial-rewrite[6304]: warning: ldap:/etc/postfix/imap-groups.cf: table lookup problem
Nov 19 12:32:54 comune postfix/trivial-rewrite[6304]: warning: virtual_alias_domains lookup failure
Nov 19 12:32:54 comune postfix/smtpd[6303]: NOQUEUE: reject: RCPT from unknown[192.168.50.12]: 451 4.3.0 <___________@gmail.com>: Temporary lookup failure; from=<favarato@posta.interna> to=<___________@gmail.com> proto=ESMTP helo=<_____________.cpianezza.local>
Nov 19 12:32:54 comune postfix/trivial-rewrite[6304]: warning: dict_ldap_lookup: /etc/postfix/imap-groups.cf: Search base 'ou=Groups,ou=Accounts,dc=system,dc=lan' not found: 32: No such object
Nov 19 12:32:54 comune postfix/trivial-rewrite[6304]: warning: ldap:/etc/postfix/imap-groups.cf: table lookup problem
Nov 19 12:32:54 comune postfix/smtpd[6303]: warning: dict_ldap_lookup: /etc/postfix/imap-aliases.cf: Search base 'ou=Users,ou=Accounts,dc=system,dc=lan' not found: 32: No such object
Nov 19 12:32:54 comune postfix/smtpd[6303]: warning: ldap:/etc/postfix/imap-aliases.cf lookup error for "______________@posta.interna"
Nov 19 12:32:54 comune postfix/smtpd[6303]: NOQUEUE: reject: RCPT from unknown[192.168.50.12]: 451 4.3.0 <________________@posta.interna>: Temporary lookup failure; from=<favarato@posta.interna> to=<______________@posta.interna> proto=ESMTP helo=<_____________1.cpianezza.local>
Nov 19 12:32:54 comune postfix/smtpd[6303]: disconnect from unknown[192.168.50.12]