使用apt-get安装mailutils而无需用户干预

While installing mailutils on ubuntu 12.04 using apt-get, there are 2 instances when manual intervention is required, first to select the site configuration and secondly to enter the hostname of the box. Is there a way to automate the installation? I need to install the package on many servers and being a n00b sys admin, I haven't been able to find a solution yet. I can make and install from source, however it has other problems. Thanx.While installing mailutils on ubuntu 12.04 usin