So I've been doing some experimenting this weekend with the idea of what to do with suspected junk/spam email and whether we should leave it up to the end user to deal with it, or get the server to do something about it. With iRedMail installed, Dovecot, Postfix and Amavis can take care of this for you, to whatever level you wish.
If you want, you could just have suspected email have a special "tag" added to the subject and then your users can use this to create their own rules to do what they want with it. I want to go one step further, I want "tagged" spam mail to automatically get put into the spam folder. This way, users can still check if they want to, but it will keep their main inbox folder clean and tidy.
