• We do make best effort to prevent spam sent to you from being delivered
• There's not much we can do to prevent attempts to send it to you; we can't follow up and investigate individual messages.
• There's a lot more information at the OIT Spam information page and at CAUCE (Coalition against Unsolicited Commercial Email)

We run the OpenBSD spamd service to prevent or delay message delivery from suspect servers. In addition, systems which attempt to send messages to nonexistent accounts or defunct physics hostnames are temporarily blacklisted.

We also run the SpamAssassin filter on all incoming messages to our mail system. SpamAssassin simply assigns each message a “score”, based on the content.

• Messages with a score of 5 or less are left alone
• Messages with a score between 5 and 8 have the text SPAM added to their subject line befrore being delivered.
• Messages with a score over 8 are rejected (our system refuses to deliver them to you).

You can change settings within your account to take further action based on the spamassassin score, such as move messages to a different folder, or even delete them completely.

These settings are made within the Physics webmail system. As an example, let's say you want to filter those messages with scores with 6 or higher, so they are placed into a separate folder instead of your INBOX.

• After logging in to the webmail system, click on Filters
• Click on Add a New Rule
• Under Condition change the first drop-down box which says To: or Cc to X-Spam-Level
• In the text box after contains enter

  ******

  (that is, 6 stars)

• Under Action choose Move message into and select a folder name as the destination.
• Under Additional actions, check STOP: If this rule matches, do not check any rules after it.
• Click Add New Rule

You can see the set of rules which triggered a spam tag for a particular message in the header “X-Spam-Status”, and the list of SpamAssassin's default scores can be found here: spam_default_scores