I recently downloaded and tried to install RaQ4-All-security-2.0.1.16402.pkg on my RaQ4 but I keep getting the message - Problem Installing package component: sendmail-conf-8.10.2-C3.i386.rpm
I had the same problem on one RaQ! After some experiments, I found out that in my case the problem were some manually added lines in /etc/mail/aliases and /etc/mail/virtusertable.
On my second RaQ, I moved the two files to a temporary directory before installing the two sendmail patches and moved them back after the installation. This time the installation was successful!
Uwe