Spam is becoming an awful problem which we take very seriously.
Not only is all email checked using both Spam Assassin and Bayes filtering, we are also subscribed to a daily update service where spam mail is added in real time to our block list by a team of humans, we don't rely purely on computer logic to find spam mail.
To combat further, any connections made to our mail server are checked against Realtime Black Lists (RBL's) which contain lists of all known spammer addresses - any mail from these is automatically dropped.
