NOTE In ListManager 10.2b and later, this section is called Mailstream Queue.
The Sending Backlog Drilldown page shows you a breakdown of the information from the MailStream Blockage graph on the Deliverability Dashboard.
How to get there:
In the Sending Backlog section of the Deliverability Dashbord, click view data.
Column Descriptions
MailStream: The name of the MailStream.
Total: The total number of pending recipients.
Lyris, Inc.
Self-Serve Portal:
6401 Hollis Street., # 125
Emeryville, CA 94608
Customer Support:
1-888-LYRIS-CS (1-888-597-4727)
or
1-571-730-5259
Hours:
Monday through Friday
6:00 a.m.--6:00 p.m. PST
http://www.lyris.com/customer-service/contact-support/