[LDAP] Issues with mailbox creation

[CringedNico]

I'm running into an issue with mailbox provisioning when using LDAP authentication.

When I create a local user inside Stalwart, the mailbox is automatically provisioned as expected. However, when a user logs in via LDAP (authentication is successful), the mailbox is not created, and incoming mail is rejected with: "550 Mailbox not found".

I'm using MySQL for all storage (blob, data, fts, etc.), and authentication against an external LDAP directory.

Is there a working method to trigger mailbox auto-provisioning after a successful LDAP login? Or do I have to manually pre-create all mailboxes for LDAP users?

Thanks in advance!

[mdecimus]

In LDAP accounts are automatically created when an email is delivered, even if the user has never logged in.
Try setting the log level to debug or trace and check the logs for details when an email is delivered.