can't see member in group

[Thomas Bendler <tbendler@irbkis.de>]

hi folks,

after creating a ldap tree i get a problem with my rfc822mailgroup. i
specified a group called people with the complete information of all
users. additional i create a group with the objectclass
rfc822mailgroup. this one i called drochtersen. i now add a user using
the member attribute. after accessing the database with the web500gw i
could access the group people without problems. when i access the
group drochtersen it contain no data. imho there must be the entries
of the people i specified with the member attribute. i attached a part
of my ldif file:

--snip--
dn: dc=irbkis, dc=de
objectclass: top
objectclass: rfc822localpart
objectclass: organization
o: Industrie Rohr Bau GmbH
l: Drochtersen
postalcode: 21706
streetadress: Werkstrasse 14

dn: cn=Drochtersen, dc=irbkis, dc=de
objectclass: top
objectclass: rfc822mailgroup
objectclass: groupofnames
cn: Drochtersen
owner: uid=root, ou=People, dc=irbkis, dc=de
requeststo: uid=root, ou=People, dc=irbkis, dc=de
errorsto: uid=root, ou=People, dc=irbkis, dc=de
description: Hauptsitz
mail: irbkis@irbkis.de
joinable: true
member: cn=Thomas Bendler,ou=People,dc=irbkis,dc=de
multilinedescription: Mitarbeiter in Drochtersen

dn: uid=tbendler,ou=People,dc=irbkis,dc=de
uid: tbendler
ou: People
cn: Thomas Bendler
sn: Bendler
objectClass: account
objectClass: posixAccount
objectClass: top
objectClass: shadowAccount
objectclass: person
objectclass: organizationalperson
userPassword: {crypt}Mplqhu/mbHcdc
shadowLastChange: 10787
shadowMax: 10000
loginShell: /bin/bash
uidNumber: 500
gidNumber: 100
homeDirectory: /home/tbendler
gecos: Account Thomas Bendler
seealso: cn=Drochtersen, dc=irbkis, dc=de
mail: tbendler@irbkis.de
mail: thomas.bendler@informatik.fh-hamburg.de
l: Hamburg
postalcode: 21033
streetadress: billwiese 22
--snip--

any hints what's going wrong?

regards thomas
-- 
Thomas Bendler      \\://     thomas.bendler@informatik.fh-hamburg.de
Billwiese 22        (o -)    http://www.rzbd.fh-hamburg.de/~tbendler/
21033 Hamburg ---ooO-(_)-Ooo---               tel.: 0 177 - 277 37 61
Germany                                    Linux, enjoy the ride ...!