Cisco Cisco Email Security Appliance C160 Mode D'Emploi

profiles and then apply profiles to each listener via the Network > Listeners page 
(or the 

listenerconfig

 command). You can also assign bounce profiles to 

specific messages using message filters. (See 

 for more information.)

For conversational soft bounces, a soft bounce event is defined as each time 
a recipient delivery temporarily fails. A single recipient may incur several 
soft bounce events. You use the Bounce Profiles page or the 

bounceconfig

 

command to configure parameters for each soft bounce event. (See 

.)

By default, the system generates a bounce message and sends it to the original 
sender for each hard bounced recipient. (The message is sent to the address 
defined in the Envelope Sender address of the message envelope. Envelope 
From is also commonly referred to as the Envelope Sender.) You can disable 
this feature and instead rely on log files for information about hard bounces. 
(See “Logging” in the Cisco IronPort AsyncOS for Email Daily Management 
Guide.) 

Soft bounces become hard bounces after the maximum time in queue or the 
maximum number of retries, whichever comes first.

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).