AVG anti-virus 9 用户手册
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8.3. E-mail Scanner
One of the most common sources of viruses and trojans is via e-mail. Phishing and
spam make e-mail an even greater source of risks. Free e-mail accounts are more
likely to receive such malicious e-mails (as they rarely employ anti-spam technology),
and home users rely quite heavily on such e-mail. Also home users, surfing unknown
sites and filling in online forms with personal data (such as their e-mail address)
increase exposure to attacks via e-mail. Companies usually use corporate e-mail
accounts and employ anti-spam filters etc, to reduce the risk.
spam make e-mail an even greater source of risks. Free e-mail accounts are more
likely to receive such malicious e-mails (as they rarely employ anti-spam technology),
and home users rely quite heavily on such e-mail. Also home users, surfing unknown
sites and filling in online forms with personal data (such as their e-mail address)
increase exposure to attacks via e-mail. Companies usually use corporate e-mail
accounts and employ anti-spam filters etc, to reduce the risk.
8.3.1. E-mail Scanner Principles
The E-mail Scanner component scans incoming/outgoing e-mails automatically. You
can use it with e-mail clients that do not have their own plug-in in AVG (e.g. Outlook
Express, Mozilla, Incredimail, etc.).
can use it with e-mail clients that do not have their own plug-in in AVG (e.g. Outlook
Express, Mozilla, Incredimail, etc.).
During AVG
one for checking incoming e-mails and the second one for checking outgoing e-mails.
Using these two servers e-mails are automatically checked on ports 110 and 25 (
standard ports for sending/receiving e-mails).
Using these two servers e-mails are automatically checked on ports 110 and 25 (
standard ports for sending/receiving e-mails).
E-mail Scanner works as an interface between e-mail client and e-mail servers on
the Internet.
the Internet.
Incoming mail: While receiving a message from the server, the E-mail
Scanner component tests it for viruses, removes infected attachments, and
adds certification. When detected, viruses are quarantined in
adds certification. When detected, viruses are quarantined in
immediately. Then the message is passed to the e-mail client.
Outgoing mail: Message is sent from e-mail client to E-mail Scanner; it tests
the message and its attachments for viruses and then sends the message to
the SMTP server (scanning of outgoing e-mails is disabled by default, and can
be set up manually).
the SMTP server (scanning of outgoing e-mails is disabled by default, and can
be set up manually).
Note: AVG E-mail Scanner is not intended for server platforms!