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Technology Overview
Mac OS X Server
Post x and Cyrus are easy to con gure and manage using the Server Admin utility.
Protection against junk mail and viruses
To defend your servers and clients against unwanted mail and destructive viruses,
Mac OS X Server v10.4 integrates two popular open source projects: SpamAssassin
for adaptive junk mail ltering and ClamAV for virus detection and quarantine.
SpamAssassin enables Mac OS X Server to analyze the content of each mail message.
Using a wide variety of local and network tests, SpamAssassin assigns a probability
rating that the mail is spam. If the probability is high, it classi es the mail as potential
junk mail and allows the user to decide how to handle it. The SpamAssassin junk mail
lter is adaptive, which means it can be trained to recognize which marginal mail mes-
sages are spam and which are not. Training can be done automatically: SpamAssassin
analyzes the content of user inboxes every night and adapts its lters accordingly. Or,
for greater control, postmasters and users may prefer to train SpamAssassin manually.
