Cisco Cisco Email Security Appliance C650 Guía Del Usuario
Chapter 1 Customizing Listeners
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Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
OL-25137-01
Settings for messages containing multiple encodings: localeconfig
You can set the behavior of AsyncOS regarding modifying the encoding of
message headings and footers during message processing. This setting is not
configured via the GUI. Instead, it is configured via the
message headings and footers during message processing. This setting is not
configured via the GUI. Instead, it is configured via the
localeconfig
in the CLI.
HAT delayed
rejections
rejections
Configure whether to perform HAT rejection at the
message recipient level.By default, HAT rejected
connections will be closed with a banner message at the
start of the SMTP conversation.
message recipient level.By default, HAT rejected
connections will be closed with a banner message at the
start of the SMTP conversation.
When an email is rejected due to HAT “Reject” settings,
AsyncOS can perform the rejection at the message
recipient level (RCPT TO), rather than at the start of the
SMTP conversation. Rejecting messages in this way delays
the message rejection and bounces the message, allowing
AsyncOS to retain more detailed information about the
rejected messages. For example, you can see the mail from
address and each recipient address of the message which is
blocked. Delaying HAT rejections also makes it less likely
that the sending MTA will perform multiple retries.
AsyncOS can perform the rejection at the message
recipient level (RCPT TO), rather than at the start of the
SMTP conversation. Rejecting messages in this way delays
the message rejection and bounces the message, allowing
AsyncOS to retain more detailed information about the
rejected messages. For example, you can see the mail from
address and each recipient address of the message which is
blocked. Delaying HAT rejections also makes it less likely
that the sending MTA will perform multiple retries.
When you enable HAT delayed rejection, the following
behavior occurs:
behavior occurs:
--The MAIL FROM command is accepted, but no message
object is created.
object is created.
--All RCPT TO commands are rejected with text explaining
that access to send e-mail is refused.
that access to send e-mail is refused.
--If the sending MTA authenticates with SMTP AUTH,
they are granted a RELAY policy and are allowed to deliver
mail as normal.
they are granted a RELAY policy and are allowed to deliver
mail as normal.
NOTE: Only configurable from the CLI
listenerconfig
-->
setup
command.
Table 1-2
Listener Global Settings
Global Setting
Description