[CentOS] Mail Question

Hello everyone,

Im having a issue that I just cant seem to figure out. We currently are running an email server Centos 5.6 Postfix/Dovecot with a squirrelmail frontend. I was setting up a testbed to do a migration to SoGo using LDAP/MYSQL/POSTFIX/Dovecot. I have everything up and functional but one thing is giving me an issue. The testbed box will not handle a users mailbox over 2gb. We are using mbox on the existing server with no issues at all. I have multiple users with inboxes over 2gb and and archive mbox file with over 50gb. I have check postfix and made sure that the mailbox_size_limit = 0 Both are running i686 as returned by the arch command and both are Centos version 5.6. Any ideas would be greatly appreciated.