Cisco Cisco Email Security Appliance C390 ユーザーガイド

Use the 

tophosts

 command to check the number of soft and hard bounces. 

Sort by “Soft Bounced Events” (option 

4

) or “Hard Bounced Recipients” 

(option 

5

). If the performance for a particular domain is problematic, use the 

commands above to manage the delivery to that domain.