LDAP Authentication

1. Sign in to your Mailserver

2. Go to System - Configuration

3. Access - Identity Provider

4. Setup LDAP Configuration

• Server Settings
  • Input either Hostname or IP (Recommended: IP in case DNS f's up)
  • Port 389 for LDAP, 636 for LDAPS
• Encryption
  • For LDAPS, use StartTLS not SSL
  • For LDAP, disable SSL/StartTLS and Enable Ignore SSL Errors
• Attributes
  • Base DN is usually your AD Domain (dc=example,dc=local)
  • Username Field is the LDAP User Attribute that will be mapped to the appropriate Mailbox. If this is empty, nothing will be done.
  • Attribute Field would be used for Attribute Mapping. With this a Mailbox Template can be assigned.
• Bind Settings
  • Use a User that is not used for interactive Login and has limited Permission (Read is enough)
• Synchronization
  • Enable User Creation so, on first login, the user is automatically created
  • Enable Import to import and sync existing Users