meekish@server:~$ sudo apt-get install courier-authmysql courier-pop courier-imap
Reading Package Lists... Done
Building Dependency Tree... 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.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
courier-authmysql: Depends: courier-base (>= 0.47) but it is not going to be installed
Depends: courier-authdaemon (>= 0.47) but it is not going to be installed
courier-imap: Depends: courier-base (>= 0.53.2) but it is not going to be installed
courier-pop: Depends: courier-base (>= 0.53.2) but it is not going to be installed
E: Broken packages
meekish@server:~$ sudo dpkg -l "*courier*"
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name Version Description
+++-========================-========================-================================================================
ii courier-authdaemon 0.58-3 Courier authentication daemon
ii courier-authlib 0.58-3 Courier authentication library
ii courier-authlib-userdb 0.58-3 userdb support for the Courier authentication library
un courier-authmysql <none> (no description available)
un courier-authpostgresql <none> (no description available)
ii courier-base 0.53.2-3 Courier Mail Server - Base system
un courier-debug <none> (no description available)
un courier-imap <none> (no description available)
un courier-mta <none> (no description available)