Outlook has spam filtering capabilities similar to those in Eudora, but our experience has been that it tends to result in too many false positives to be relied upon.
Once we complete the migration to the Exchange server, additional spam screening options will be put in place.
For the time being we recommend the use of Spam Assassin. If those settings do not effectively reduce your spam to a reasonable level, your Desktop Support Specialist can work with you to fine-tune the Outlook options.
SpamAssassin allows you to set thresholds for the both the labeling of messages as spam and the score at which something should be done with the mail.