Well, just tried updating to b7 to see what would happen, ran the install (I forced an install since I'd upgraded just to be sure that all of the pkgs installed) and it appears that the pre script fails from what I'm seeing here:
Setting right user and group. This can take a long time depending on the
used filesystem. Please be patient.
Setting user and group ...
Important: for the first time rebuild all the base and destroy the old ones init type ---------> initall_ox
for recreate the ldap base only use ---------> /usr/local/open-xchange/sbin/scan_users.sh
for starting the server now wait 10sec and type: service openexchange start
Warning-Warning-Warning-Warning-Warning-Warning-Warning-Warning
You must use rpm -e sme7-openexchange-conf to delete this rpm.
and re-install it with rpm -ivh sme7-openexchange-conf-0.8.0.5-06.noarch.rpm
error: %pre(sme7-openexchange-conf-0.8.0.5-06.noarch) scriptlet failed, exit status 1
error: install: %pre scriptlet failed (2), skipping sme7-openexchange-conf-0.8.0.5-06
So I did remove it as it explains and tried installing that particular package with the same error:
#rpm -ivh sme7-openexchange-conf-0.8.0.5-06.noarch.rpm
Preparing... ########################################### [100%]
Warning-Warning-Warning-Warning-Warning-Warning-Warning-Warning
You must use rpm -e sme7-openexchange-conf to delete this rpm.
and re-install it with rpm -ivh sme7-openexchange-conf-0.8.0.5-06.noarch.rpm
error: %pre(sme7-openexchange-conf-0.8.0.5-06.noarch) scriptlet failed, exit status 1
error: install: %pre scriptlet failed (2), skipping sme7-openexchange-conf-0.8.0.5-06