使用ldap 3269端口，可以跨多子域查询用户的信息。
def find_email_of_user(displayName):
server = Server('ldaps://x.x.x.x:3269', get_info=ALL)
conn = Connection(server,
user='xxxx',
password='xxxxxxxxx',
auto_bind=True,
authentication=NTLM)
conn.search('dc=domainname,dc=com',
search_filter='(displayName={})'.format(displayName),
attributes=ALL_ATTRIBUTES)
result = conn.response[0]['attributes']
return result['mail']
LDAP SSL uses ports 3269 and 636 but IMSS Windows does not support LDAP SSL.
The table shows the ports used by LDAP and LDAP SSL services/protocols:
| Service Name | UDP | TCP |
|---|---|---|
| LDAP | None | 389 |
| LDAP SSL | None | 636 |
| Global Catalog LDAP | None | 3268 |
| Global Catalog LDAP SSL | None | 3269 |
For more information about Active Directory and how it works, refer to the Microsoft article How Active Directory Searches Work.
其他参考文档：
https://help.duo.com/s/article/2061?language=en_US