Howto: Postfix Spam Filter using Ubuntu Dapper, MailScanner, SpamAssassin, Razor, Pyzor, DCC and ClamAV [email protected] Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. Since you only requested a single operation it is extremely likely that the package is simply not installable and a bug report against that package should be filed. The following information may help to resolve the situation: The following packages have unmet dependencies: dcc-client: Depends: dcc-common (= 1.2.74-2) but 1.3.42-4build1 is to be installed E: Broken packages [email protected] how can I fix this? I already ran apt-get install dcc-common successfully. Thanks in advance for your help.