Cisco Cisco Email Security Appliance C160 Mode D'Emploi

When configuring a bounce profile, the following parameters control how conversational bounces are 
handled per message:

The number of times the system should try to reconnect to the recipient host to 
re-deliver the soft bounced message before treating it as a hard bounced 
message. The default is 100 retries. 

The amount of time the system should spend trying connect to the recipient host 
to re-deliver the soft bounced message before treating it as a hard bounced 
message. The default is 259,200 seconds (72 hours).

The amount of time the system should wait before the first attempt to re-deliver 
the soft bounced message. The default is 60 seconds. Set the initial retry time to 
a high value to reduce the frequency of soft bounce attempts. Conversely, to 
increase the frequency, lower the value. 

The maximum amount of time the system should wait before trying to re-deliver 
the soft bounced message. The default is 3,600 seconds (1 hour). This is not the 
interval between each subsequent try; rather, it is another parameter that can be 
used to control the number of retries. The initial retry interval is limited on the 
high end by the maximum retry interval. If the calculated retry interval period 
exceeds the maximum retry interval then the maximum retry interval is used 
instead.

Specify whether hard bounce message generation is enabled or disabled. If it is 
enabled, you can choose the format of the message. By default, bounce messages 
generated use the DSN format (RFC 1894). You can select a custom notification 
template to use for bounce messages. For more information, see the “Text 
Resources” chapter of the Cisco IronPort AsyncOS for Email Configuration 
Guide.

You can also choose whether or not to parse the DSN status field from the bounce 
response. If you choose “Yes,” AsyncOS searches the bounce response for a 
DSN status code (RFC 3436) and uses the code in the Status field of the delivery 
status notification.

Specify whether or not to send delay warnings. If enabled, specify the minimum 
interval between messages as well as the maximum number of retries to send.

You can select a custom notification template to use for warning messages. For 
more information, see the “Text Resources” chapter of the Cisco IronPort 
AsyncOS for Email Configuration Guide.

You can bounce messages to an alternate address rather than the default of the 
Envelope Sender address.

You can select a DomainKeys profile to use for signing bounce and delay 
messages. For information on DomainKeys, see