Post-check of DNS configuration Failed:[Forward zone entry

During a clean DSFW install (OES11Sp1) on a SLES11SP2 we got an error during the second fase 'Configure DNS' in DSfW. We want to implement DSfW in a existing tree with existing DNS servers.
We did the installation several times, but always get this error. Anyone an idea?

Thanks in advanced


2013-06-26 11:49:12 Processing entry cn=@,cn=gilzerijen_lan,ou=OESSystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#gc_#tcp_Default-First-Site-Name_#sites,cn=gilzerijen_lan,ou=OESSystemObjects, o=GENR
2013-06-26 11:49:12 Processing entry cn=\#gc_#tcp,cn=gilzerijen_lan,ou=OESSystemObjects ,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#kerberos_#tcp_dc_#msdcs,cn=gilzerijen_lan,ou= OESSystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#kerberos_#tcp_Default-First-Site-Name_#sites_dc_#msdcs,cn=gilzerijen_lan,ou=OESSyst emObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#kerberos_#tcp_Default-First-Site-Name_#sites,cn=gilzerijen_lan,ou=OESSystemObjects, o=GENR
2013-06-26 11:49:12 Processing entry cn=\#kerberos_#tcp,cn=gilzerijen_lan,ou=OESSystemO bjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#kerberos_#udp,cn=gilzerijen_lan,ou=OESSystemO bjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#kpasswd_#tcp,cn=gilzerijen_lan,ou=OESSystemOb jects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#kpasswd_#udp,cn=gilzerijen_lan,ou=OESSystemOb jects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#ldap_#tcp_b3661180-4756-11d8-be57-000d56b845c4_domains_#msdcs,cn=gilzerijen_lan,ou=O ESSystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#ldap_#tcp_dc_#msdcs,cn=gilzerijen_lan,ou=OESS ystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#ldap_#tcp_Default-First-Site-Name_#sites_dc_#msdcs,cn=gilzerijen_lan,ou=OESSyst emObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#ldap_#tcp_Default-First-Site-Name_#sites_gc_#msdcs,cn=gilzerijen_lan,ou=OESSyst emObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#ldap_#tcp_Default-First-Site-Name_#sites,cn=gilzerijen_lan,ou=OESSystemObjects, o=GENR
2013-06-26 11:49:12 Processing entry cn=\#ldap_#tcp_gc_#msdcs,cn=gilzerijen_lan,ou=OESS ystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#ldap_#tcp,cn=gilzerijen_lan,ou=OESSystemObjec ts,o=GENR
2013-06-26 11:49:12 Processing entry cn=\#ldap_#tcp_pdc_#msdcs,cn=gilzerijen_lan,ou=OES SystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=d5768310-de44-11e2-815f-005056b701ee_#msdcs,cn=gilzerijen_lan,ou=OESSystem Objects,o=GENR
2013-06-26 11:49:12 Processing entry cn=lnxdsfw1,cn=gilzerijen_lan,ou=OESSystemObjects, o=GENR
2013-06-26 11:49:12 Processing entry cn=@,cn=gilzerijen_lan,ou=OESSystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=@,cn=gilzerijen_lan,ou=OESSystemObjects,o=GENR
2013-06-26 11:49:12 connect and bind.. 172.20.2.102, 636, cn=admin,o=genr,
2013-06-26 11:49:12 Processing entry cn=102,cn=2_20_172_in-addr_arpa,ou=OESSystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=@,cn=2_20_172_in-addr_arpa,ou=OESSystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=@,cn=2_20_172_in-addr_arpa,ou=OESSystemObjects,o=GENR
2013-06-26 11:49:12 Processing entry cn=2_20_172_in-addr_arpa,ou=OESSystemObjects,o=GENR
DNS Resource Records are created
Post-check of DNS configuration Failed:[Forward zone entry is missing]
at /opt/novell/xad/lib64/perl/Logger.pm line 120
Logger::_err('Post-check of DNS configuration Failed:[Forward zone entry is...') called at /opt/novell/xad/lib64/perl/Logger.pm line 211
Logger::Log(0, 'Post-check of DNS configuration Failed:[Forward zone entry is...') called at /opt/novell/xad/share/dcinit/provision/provision_dns.pl line 50
2013-06-26 11:49:12,834 INFO - DNS Configuration:DNS Configuration returned.
2013-06-26 11:59:25,850 INFO - DNS Configuration:DNS Configuration starting
2013-06-26 11:59:25,850 INFO - DNS Configuration:Script to be run is /opt/novell/xad/share/dcinit/provision/provision_dns.pl
2013-06-26 11:59:26 Pre-check of DNS configuration Passed