i understand what iredmail have a got  own ldap schema, and i want to keep using it, but i have an external ldap and i want to validate  iredmail passwords in this external ldap.

i see in /etc/dovecot/dovecot.conf this section:

auth default {
    mechanisms = plain login
    user = vmail
    passdb ldap {
        args = /etc/dovecot/dovecot-ldap.conf
    }

i just must create a new file with my external ldap configuration and edit this section with te new path to my file?

My external ldap is a openldap server.

it is not comfortable having two ldap, but I intend to keep accounts synchronized with a script, the script in tools create_mail_user_OpenLDAP.sh can greatly help to create them, so that when creating a new account on my external ldap add this automatically iredmail ldap do not know if this is efficient, but I think it is a bad idea, if someone suggests a better way to welcome it.

Any suggestions will be appreciated, thanks.