Package: courier-base courier-mta Version: 1.0.16-3+b6_amd64.deb
courier-base and courier-mta both packages editing the same file and throwing errors: The following packages will be upgraded: courier-base courier-mta 2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/866 kB of archives. After this operation, 100 kB disk space will be freed. Do you want to continue? [Y/n] Reading changelogs... Done Preconfiguring packages ... (Reading database ... 56948 files and directories currently installed.) Preparing to unpack .../courier-mta_1.0.16-3+b6_amd64.deb ... Unpacking courier-mta (1.0.16-3+b6) over (1.0.16-3) ... dpkg: error processing archive /var/cache/apt/archives/courier-mta_1.0.16-3+b6_amd64.deb (--unpack): trying to overwrite '/etc/courier/hosteddomains', which is also in package courier-base 1.0.16-3 Preparing to unpack .../courier-base_1.0.16-3+b6_amd64.deb ... Unpacking courier-base (1.0.16-3+b6) over (1.0.16-3) ... dpkg: error processing archive /var/cache/apt/archives/courier-base_1.0.16-3+b6_amd64.deb (--unpack): trying to overwrite '/etc/courier/hosteddomains', which is also in package courier-mta 1.0.16-3 Errors were encountered while processing: /var/cache/apt/archives/courier-mta_1.0.16-3+b6_amd64.deb /var/cache/apt/archives/courier-base_1.0.16-3+b6_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) kind regards Philipp