schema error

[Cristian Del Carlo <cristian.delcarlo@osratoscana.it>]

Hi,
i have add in my ldap schema configuration the following line:
include         /etc/openldap/schema/qmailuser.schema

But when i start ldap server i have the following error:
/etc/openldap/schema/qmailuser.schema: line 82: AttributeType inappropriate matching rule: "caseIgnoreSubstringsMatch"

The attribute that have the error is the following :
attributetype ( 1.3.6.1.4.1.7914.1.2.1.11 NAME 'mailReplyText'
        DESC 'A reply text for every incoming message'
        SUBSTR caseIgnoreSubstringsMatch
        SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{4096} SINGLE-VALUE )

I use openldap2 2.2.6.
Any idea what should change in the schema to avoid the failed in startup?

I slapd.conf i include the following schemas :
include         /etc/openldap/schema/core.schema
include         /etc/openldap/schema/cosine.schema
include         /etc/openldap/schema/inetorgperson.schema
include         /etc/openldap/schema/rfc2307bis.schema
include         /etc/openldap/schema/yast2userconfig.schema
include         /etc/openldap/schema/phpgwaccount.schema
include         /etc/openldap/schema/phpgwcontact.schema
include         /etc/openldap/schema/qmailuser.schema

Thanks .
Best regards,

Cristian Del Carlo