计算机安全超级工具（十四）－电子邮件安全和反垃圾邮件

Norton反病毒软件

ClamAV

Clam AntiVirus is an anti-virus toolkit for Unix. The main purpose of

this software is the integration with mail servers (attachment

scanning). The package provides a flexible and scalable

multi-threaded daemon in the clamav-daemon package, a command-line

scanner in the clamav package, and a tool for automatic updating via

the Internet in the clamav-freshclam package. The programs are based

on libclamav6, which can be used by other software.

This package mainly manages the clamav system account. It is not really

useful without the clamav package. It also handles the configuration

for both the clamav-daemon and the clamav-milter packages.

Canonical provides critical updates for clamav-base until October 2010.

Freshclam

Clam AntiVirus is an anti-virus toolkit for Unix. The main purpose of

this software is the integration with mail servers (attachment

scanning). The package provides a flexible and scalable

multi-threaded daemon in the clamav-daemon package, a command-line

scanner in the clamav package, and a tool for automatic updating via

the Internet in the clamav-freshclam package. The programs are based

on libclamav6, which can be used by other software.

This package contains the freshclam program and scripts to automate virus

database updating. It relies on an Internet connection, but can be

run in a variety of ways to compensate for intermittent connections.

Procmail

rocmail Module Library is a collection of many plug-in modules for

the Procmail mail processing utility. The modules allow common tasks

like parsing dates, times, MIME, and email addresses, forwarding

mail, dealing with POP3, spam shielding, running email cron jobs,

handling daemon messages, and more.

Includes also all of Alan Stebben's recipes (the pioneer of Prcmail).

Canonical does not provide updates for procmail-lib. Some updates may be provided by the Ubuntu community.

SpamAssassin

SpamAssassin is a very powerful and fully configurable spam filter

with numerous features including automatic white-listing, RBL

testing, Bayesian analysis, header and body text analysis. It is

designed to be called from a user's .procmail or .forward file, but

can also be integrated into a Mail Transport Agent (MTA).

Included in this package is a daemonized form of spamassassin (spamd)

which communicates with its client (spamc) via TCP, to reduce the

overhead of loading perl with each message. To take advantage of

this, you must install the spamc package.

Canonical provides critical updates for spamassassin until October 2010.