Depends how much flexibility you want/need. Dovecot is pretty easy and straight forward. Here is one with virtual domains, etc. might be overkill for your usec

Depends how much flexibility you want/need. Dovecot is pretty easy and straight forward. Here is one with virtual domains, etc. might be overkill for your usecase though. http://workaround.org/ispmail/squeeze http://workaround.org/ispmail/squeeze I personally run a stack over courier and some other hacks ontop of rdeliver, which works really nicely. Important: Please always make sure to check that you don't run an open relay.