Email bounces are automatically processed by Lead Liaison. After processing your emails, subscribers will be marked appropriately, and you can access all bounce related statistics from the Statistics > Email Campaign Stats or Statistics > Contact List Stats pages Reports > Standard > Emails section.
Hard bounces will mark a Subscriber as "Bounced" by the application after one bounce, and deal with problems like "email address doesn't exist" or "invalid domain name". Soft bounces take 5 times to remove a subscriber from your list, and deal with more common problems like "relay problem" or "mailbox is full".Lead Liaison also has a process to configure DKIM/DomainKeys, SenderID and will support you when setting up your SPF record. In case of a soft bounce our system tries to send the messages for 5 days. Attempts decrease over this time period (several delivery attempts during the first hour, then a couple times only during the 3rd day, etc.). After 5 days we do not report the email as being a hard bounce. If you try to send to an email address after 5 days of attempts with nothing but soft bounces, our system will try to send the email again.