I've started setting up an email server, and it's going quite well so far, but I want to add spam filtering.
It's not a normal email server, it's more of a central storage for all of my external email accounts, so what I've got so far is: Setup one Linux user account per email account. Getmail receives the mail, and stores it in maildir format if each user's home directory. Dovecot acts as a local IMAP server to allow me to pick up the emails from each user.
What I want is a server side spam filter in there, has anyone done anything like this?
Matt