folders not seen by email clients

When I use cyradm to create folders called tmp and spam the email clients can't see them. The output from cyradm follows: localhost.localdomain lam tmp gzzr lrswipcda cyrus c localhost.localdomain lam spam gzzr lrswipcda cyrus c However, folders that are created using the email client are fine.

hardware for cyrus murder

We are in the process of converting UW Imap to Cyrus Imap. We have about 10K users using about 100K mailboxes. We anticipate the number of users to increase to 15K. I looked at http://asg.web.cmu.edu/cyrus/ocnfig.html that describes Cyrus Configuration for murder hardware. What is not clear to me