attributetype ( 1.3.6.1.4.1.0.1
        NAME 'externalMail'
        DESC 'external mail address for communication outside the org'
        EQUALITY caseIgnoreIA5Match
        SUBSTR caseIgnoreIA5SubstringsMatch
        SYNTAX 1.3.6.1.4.1.1466.115.121.1.26{128}
        SINGLE-VALUE )

objectclass ( 1.3.6.1.4.1.0.2
        NAME 'qzwiperson'
        DESC 'own object schema to add custom values'
        SUP top
        AUXILIARY
        MUST  (cn $ sn $ uid $ externalMail)
        MAY
        ( displayName $ givenName $ homePhone $ homePostalAddress $
        mail $ mobile $ o $ photo $ userCertificate $
        x500uniqueIdentifier $ preferredLanguage $
        userSMIMECertificate $ userPKCS12 $ userPassword $
        telephoneNumber $ description ) )