Complete the configuration for LDAP or Secure LDAP and then revise the settings in silhouette.conf for the LDAP attribute keys used by the Microsoft AD server configured by your corporate IT team.
Microsoft AD User Identity RDN
In Microsoft AD, often the Relative Distinguished Name (RDN) for a user or person is sAMAccoutName.
Therefore, set ldap.userBindAttribute to sAMAccountName.
Microsoft AD Email Attribute
In Microsoft AD, often the person attribute for the user’s email address is userPrincipalName.
Therefore, set ldap.mailAttribute to userPrincipalName.