As well as guarding against viruses,it includes: E-mail filtering,which controls incoming e-mail that contains spam,file attachments that are too large or hoax e-mails.

• 关于防病毒方面，它具有：电子邮件过滤，由它来控制含有不请自来的广告邮件、太大的附加文件或者戏弄邮件的进入。