Exclude userdb from iterate users

Hi,

I have a system with various userdbs defined, mostly all of them based 

on ldap (and a few passwd-files).

I want one of my ldap userdbs not to be used in "doveadm user -A" 

commands, that is to be excluded in iterate searchs. I have no iterate_filter neither iterate_attrs configured in that userdb, but it is still used.

Is it possible? How?

-- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868889150 Fax: 868888337