Yeah, may seem a bit odd to want to stop this, but most of my clients access their emails through POP3 and as all the spam is directed to the Junk Mail folder at the moment, it ends up filling up their mail boxes as it never gets removed.

Am I right in thinking that out and out spam (i.e. from blacklists) gets deleted / bounced anyway, its only spam that may not be spam that gets delivered? At least that's how @mail worked with Spam Assassin.

So, how can I turn this action off, I don't want it delivering mail to the Junk folder or trash either, as the trash folder also had emails in it, even though they'd never used the webmail system.