Руководство Пользователя для Cisco Cisco Email Security Appliance C190
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
Chapter 4 Understanding the Email Pipeline
Email Security Manager (Per-Recipient Scanning)
Safelist/Blocklist Scanning
End user safelists and blocklists are created by end users and stored in a database
that is checked prior to anti-spam scanning. Each end user can identify domains,
sub domains or email addresses that they wish to always treat as spam or never
treat as spam. If a sender address is part of an end users safelist, anti-spam
scanning is skipped, and if the sender address is listed in the blocklist, the
message may be quarantined or dropped depending on administrator settings. For
more information about configuring safelists and blocklists, see the
“Quarantines” chapter in the Cisco IronPort AsyncOS for Email Daily
Management Guide.
that is checked prior to anti-spam scanning. Each end user can identify domains,
sub domains or email addresses that they wish to always treat as spam or never
treat as spam. If a sender address is part of an end users safelist, anti-spam
scanning is skipped, and if the sender address is listed in the blocklist, the
message may be quarantined or dropped depending on administrator settings. For
more information about configuring safelists and blocklists, see the
“Quarantines” chapter in the Cisco IronPort AsyncOS for Email Daily
Management Guide.
Anti-Spam
The Anti-Spam feature involves IronPort Anti-Spam scanning. Anti-spam
scanning offers complete, Internet-wide, server-side anti-spam protection. It
actively identifies and defuses spam attacks before they inconvenience your users
and overwhelm or damage your network, allowing you to remove unwanted mail
before it reaches your users’ inboxes, without violating their privacy.
scanning offers complete, Internet-wide, server-side anti-spam protection. It
actively identifies and defuses spam attacks before they inconvenience your users
and overwhelm or damage your network, allowing you to remove unwanted mail
before it reaches your users’ inboxes, without violating their privacy.
Anti-spam scanning can be configured to deliver mail to the IronPort Spam
Quarantine (either on- or off-box). Messages released from the IronPort Spam
Quarantine proceed directly to the destination queue, skipping any further work
queue processing in the email pipeline.
Quarantine (either on- or off-box). Messages released from the IronPort Spam
Quarantine proceed directly to the destination queue, skipping any further work
queue processing in the email pipeline.
See
for more information.
Anti-Virus
Your IronPort appliance includes integrated virus scanning engines. You can
configure the appliance to scan messages and attachments for viruses on a
per-“mail policy” basis. You can configure the appliance to do the following when
a virus is found:
configure the appliance to scan messages and attachments for viruses on a
per-“mail policy” basis. You can configure the appliance to do the following when
a virus is found:
•
attempt to repair the attachment
•
drop the attachment
•
modify the subject header