Cisco Cisco Email Security Appliance X1070 사용자 가이드
13-8
Cisco AsyncOS 8.0.2 for Email User Guide
Chapter 13 Anti-Spam
Defining Anti-Spam Policies
Option
Description
Enable Suspected Spam
Scanning
Scanning
Enable Marketing Email
Scanning
Scanning
Choose an option.
Positively-identified spam scanning is always enabled if anti-spam
scanning is enabled.
scanning is enabled.
Apply This Action to Message Choose which overall action to take on positively identified spam,
suspected spam, or unwanted marketing messages:
•
Deliver
•
Drop
•
Bounce
•
Quarantine
(Optional) Send to Alternate
Host
Host
You can send identified messages to an alternate destination mailhost
(an email server other than the ones listed in SMTP Routes or DNS).
(an email server other than the ones listed in SMTP Routes or DNS).
Enter an IP address or hostname. If you enter a hostname, its Mail
Exchange (MX) will be queried first. If none exists, the A record on
the DNS server will be used (as with SMTP Routes).
Exchange (MX) will be queried first. If none exists, the A record on
the DNS server will be used (as with SMTP Routes).
Use this option if you want to redirect messages, for example to a
sandbox mail server for further examination.
sandbox mail server for further examination.
For additional important information, see
Add Text to Subject
You can alter text in the Subject of identified messages by prepending
or appending certain text strings to help users more easily identify and
sort spam and unwanted marketing messages.
or appending certain text strings to help users more easily identify and
sort spam and unwanted marketing messages.
Note
White space is not ignored in this field. Add spaces after (if
prepending) or before (if appending) the text you enter in this
field to separate your added text from the original subject of
the message. For example, if you are prepending, add the text
prepending) or before (if appending) the text you enter in this
field to separate your added text from the original subject of
the message. For example, if you are prepending, add the text
[SPAM]
with a few trailing spaces.
Note
“Add Text to Subject” field only accepts US-ASCII
characters.
characters.
Advanced Options (for custom header and message delivery)
(Optional) Add Custom
Header
Header
You can add a custom header to identified messages.
Click Advanced and define header and value.
(Optional) Send to an Alternate
Envelope Recipient
Envelope Recipient
You can have identified messages sent to an alternate envelope
recipient address.
recipient address.
Click Advanced and define an alternate address.
For example, you could route messages identified as spam to an
administrator’s mailbox for subsequent examination. In the case of a
multi-recipient message, only a single copy is sent to the alternate
recipient.
administrator’s mailbox for subsequent examination. In the case of a
multi-recipient message, only a single copy is sent to the alternate
recipient.