Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
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Cisco AsyncOS 8.0.2 for Email User Guide
Chapter 27 Quarantines
Configuring the Spam Quarantine
Receiving Multiple Notifications
Users belonging to multiple email aliases or using several email addresses will receive multiple
notifications. This is also the case for users belonging to LDAP groups receiving email.
notifications. This is also the case for users belonging to LDAP groups receiving email.
Note
If you do not use LDAP and you do not want your end users to receive multiple email notifications,
consider disabling notifications and instead allow end users to access the quarantine directly and
authenticate via LDAP or POP/IMAP.
consider disabling notifications and instead allow end users to access the quarantine directly and
authenticate via LDAP or POP/IMAP.
Determining Which Messages are Present for Each User
Depending on the method of authentication (LDAP or IMAP/POP) users may see mail for multiple email
address in the spam quarantine.
address in the spam quarantine.
When using LDAP authentication, if the Primary Email attribute has multiple values in the LDAP
directory, all of those values (addresses) will be associated with the user. Therefore, quarantined
messages addressed to all email addresses associated with the end user in the LDAP directory are present
in the quarantine.
directory, all of those values (addresses) will be associated with the user. Therefore, quarantined
messages addressed to all email addresses associated with the end user in the LDAP directory are present
in the quarantine.
If, however, the user accesses the quarantine directly via a notification, or if the authentication method
is IMAP/POP, the quarantine will only display messages for that user’s email address (or the address to
which the notification was sent). For more information about how end user authentication works, see
is IMAP/POP, the quarantine will only display messages for that user’s email address (or the address to
which the notification was sent). For more information about how end user authentication works, see
Keep in mind that email addresses are case insensitive in the Spam Quarantine, so for example, email
for Admin@example.com and admin@example.com will both be present in the quarantine for a user
associated with “admin@example.com.”
for Admin@example.com and admin@example.com will both be present in the quarantine for a user
associated with “admin@example.com.”
Limiting which Addresses have Mail Quarantined
You can use multiple mail policies (Mail Policies > Incoming Mail Policy) to specify a list of recipient addresses for which
mail will not be quarantined. Select ‘Deliver’ or ‘Drop’ instead of quarantine when configuring the anti-spam settings for the
mail policy.
mail will not be quarantined. Select ‘Deliver’ or ‘Drop’ instead of quarantine when configuring the anti-spam settings for the
mail policy.
Default Encoding
AsyncOS attempts to determine the charset of a message based on the encoding specified in the message
headers. However, if the encoding specified in the headers does not match that of the actual text, the
message will not be displayed properly when viewed in the spam quarantine. This situation is more likely
to occur with spam messages.
headers. However, if the encoding specified in the headers does not match that of the actual text, the
message will not be displayed properly when viewed in the spam quarantine. This situation is more likely
to occur with spam messages.
Table 27-5
Notifications per Address/Alias
User
Email Addresses
Aliases
Notifications
Sam
sam@example.com
1
Mary
mary@example.com
dev@example.com,
qa@example.com,
qa@example.com,
pm@example.com
4
Joe
joe@example.com,
admin@example.com
admin@example.com
hr@example.com
3