As part of our dislike of junk email, Usenet spam, and the like, we have a number of anti-spam measures in action on our systems. Some of them involve hopelessly local hacks, but others of them may be of more general interest.
We have antispam precautions for both email and Usenet news. The spam precautions are aimed more at discarding incoming spam than preventing our users from generating spam, since we feel our users are unlikely to spam.
To quote from days of yore:
No warranties whatsoever -- we stoutly deny any possibility that this may actually compile to anything resembling working binaries on any given system.Although we use our code and would appreciate any reports about bugs, we cannot accept any responsibility if your machine becomes demonically possessed after you install it.
In particular, some of our code and data contains policy decisions. You should inspect such code and data carefully before installing them, in order to make sure that you agree with our policies (some of which are very aggressive, and some of which may be controversial). If you do not and you lose important news or email messages, it is no one's fault but your own.
Our antispam software is only part of our stance against all sorts of network spam and abuse.