Chris wrote:

I'm moving from OpenLDAP 2.2.x to 2.4.40 and have wasted hours trying to achieve the following:

mailGroup (Postfix) is used as structural class, posixGroup (NIS) as auxiliary.

Anyway. I can't add rfc2307bis schema, because NIS is already included. I've tried different methods to get rid of NIS, but they're not working.

Is there any way to make posixGroup auxiliary?

Are you using static or dynamic configuration? If you're using static configuration you simply omit nis.schema.

Note that rfc2307bis.schema requires a migration from old posixGroup entries because the membership attribute also changes.

Ciao, Michael.