Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
open-xchange

Requires :

open-xchange-conversion-engine => 6.20.7.0
open-xchange-charset => 6.20.7.0
open-xchange-config-cascade-user => 6.20.7.0
open-xchange-theme-default => 6.20.7.0
open-xchange-smtp => 6.20.7.0
open-xchange-server => 6.20.7.0
open-xchange-logging => 6.20.7.0
open-xchange-file-storage-infostore => 6.20.7.0
open-xchange-i18n => 6.20.7.0
open-xchange-publish-infostore-online => 6.20.7.0
open-xchange-authentication => 6.20.7.0
open-xchange-calendar => 6.20.7.0
open-xchange-frontend-uwa-json => 6.20.7.0
open-xchange-modules-json => 6.20.7.0
open-xchange-modules-model => 6.20.7.0
open-xchange-secret-recovery-json => 6.20.7.0
open-xchange-modules-storage => 6.20.7.0
open-xchange-user-json => 6.20.7.0
open-xchange-settings-extensions => 6.20.7.0
open-xchange-push-udp => 6.20.7.0
open-xchange-spamhandler => 6.20.7.0
rpmlib(PayloadIsLzma) <= 4.4.2-1
open-xchange-proxy-servlet => 6.20.7.0
open-xchange-conversion-servlet => 6.20.7.0
/bin/sh
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
open-xchange-secret-recovery-mail => 6.20.7.0
open-xchange-jcharset => 6.20.7.0
open-xchange-frontend-uwa => 6.20.7.0
open-xchange-httpservice => 6.20.7.0
rpmlib(CompressedFileNames) <= 3.0.4-1
open-xchange-file-storage-json => 6.20.7.0
open-xchange-config-cascade-context => 6.20.7.0
open-xchange-folder-json => 6.20.7.0
/bin/bash
open-xchange-sessiond => 6.20.7.0
open-xchange-mailstore => 6.20.7.0
open-xchange-contactcollector => 6.20.7.0
open-xchange-authorization => 6.20.7.0
open-xchange-tx => 6.20.7.0
open-xchange-file-storage-config => 6.20.7.0
mysql-client => 5.0.0

Content of RPM :
/etc/init.d/open-xchange-groupware
/opt/open-xchange/etc/common/excludedupdatetasks.properties
/opt/open-xchange/etc/common/foldercache.properties
/opt/open-xchange/etc/common/transport.properties
/opt/open-xchange/etc/groupware
/opt/open-xchange/etc/groupware/HTMLEntities.properties
/opt/open-xchange/etc/groupware/TidyConfiguration.properties
/opt/open-xchange/etc/groupware/TidyMessages.properties
/opt/open-xchange/etc/groupware/ajp.properties
/opt/open-xchange/etc/groupware/attachment.properties
/opt/open-xchange/etc/groupware/cache.ccf
/opt/open-xchange/etc/groupware/calendar.properties
/opt/open-xchange/etc/groupware/configdb.properties
/opt/open-xchange/etc/groupware/contact.properties
/opt/open-xchange/etc/groupware/event.properties
/opt/open-xchange/etc/groupware/file-logging.properties
/opt/open-xchange/etc/groupware/folder-reserved-names
/opt/open-xchange/etc/groupware/imap.properties
/opt/open-xchange/etc/groupware/import.properties
/opt/open-xchange/etc/groupware/importerExporter.xml
/opt/open-xchange/etc/groupware/infostore.properties
/opt/open-xchange/etc/groupware/javamail.properties
/opt/open-xchange/etc/groupware/ldap.properties
/opt/open-xchange/etc/groupware/login.properties
/opt/open-xchange/etc/groupware/mail.properties
/opt/open-xchange/etc/groupware/mailcache.ccf
/opt/open-xchange/etc/groupware/mailjsoncache.properties
/opt/open-xchange/etc/groupware/mime.types
/opt/open-xchange/etc/groupware/noipcheck.cnf
/opt/open-xchange/etc/groupware/notification.properties
There is 36 files more in these RPM.