Cisco Cisco Email Security Appliance C160 Guía Del Usuario
Chapter 2 Configuring Routing and Delivery Features
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Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
OL-25137-01
users, domains, email addresses, and IP addresses. If a recipient matches an
address in the list, the recipient is either dropped or hard bounced, and the Global
Unsubscribe (GUS) counter is incremented. (Log files will note whether a
matching recipient was dropped or hard bounced.) The GUS check occurs
immediately before an attempt to send email to a recipient, thus inspecting all
messages sent by the system.
address in the list, the recipient is either dropped or hard bounced, and the Global
Unsubscribe (GUS) counter is incremented. (Log files will note whether a
matching recipient was dropped or hard bounced.) The GUS check occurs
immediately before an attempt to send email to a recipient, thus inspecting all
messages sent by the system.
Note
Global Unsubscribe is not intended to replace the removal of names and general
maintenance of mailing lists. The feature is intended to act as a fail-safe
mechanism to ensure email does not get delivered to inappropriate entities.
maintenance of mailing lists. The feature is intended to act as a fail-safe
mechanism to ensure email does not get delivered to inappropriate entities.
The global unsubscribe feature applies to private and public listeners.
Global Unsubscribe has a maximum limit of 10,000 addresses. To increase this
limit, contact your IronPort sales representative. Global Unsubscribe addresses
can be in one of four forms:
limit, contact your IronPort sales representative. Global Unsubscribe addresses
can be in one of four forms:
Table 2-10
Global Unsubscribe Syntax
username@example.com
Fully-formed email address
This syntax is used to block a specific recipient at a
specific domain.
specific domain.
username@
Username
The username syntax will block all recipients with the
specified username at all domains. The syntax is the
username followed by an at sign (
specified username at all domains. The syntax is the
username followed by an at sign (
@
).
@example.com
Domain
The domain syntax is used to block all recipients
destined for a particular domain. The syntax is the
specific domain, preceded by an at sign (
destined for a particular domain. The syntax is the
specific domain, preceded by an at sign (
@
).