ehcp mail error

Hi,
i installed ehcp on my debian 6 vps and i love it.
I create a domain and it's ok.
If i create a mailbox i receive ok from ehcp but if i login on squirrel i receive ERROR: Connection dropped by IMAP server.
In my var/log/syslog i receive chdir mydomain.com no such file or directory and if i check /home/vmail folder it is empty!
I test all your support post but i don't resolve!
postfi mail.cf is correct.

I tried to re-setup with Debian 6 and Ubuntu 10.0.4 but i have always same problem.
vsftpd.log say nothing.
syslog say:

Dec 13 18:13:58 euve8287 postfix/virtual[2038]: fatal: main.cf configuration error: virtual_mailbox_limit is smaller than message_size_limit
Dec 13 18:13:59 euve8287 postfix/master[23731]: warning: process /usr/lib/postfix/virtual pid 2038 exit status 1
Dec 13 18:13:59 euve8287 postfix/master[23731]: warning: /usr/lib/postfix/virtual: bad command startup -- throttling
Dec 13 18:14:42 euve8287 imapd: Connection, ip=[::ffff:127.0.0.1]
Dec 13 18:14:43 euve8287 imapd: chdir centribenesserevisivo.com/info/: No such file or directory
Dec 13 18:14:43 euve8287 imapd: info@centribenesserevisivo.com: No such file or directory

/home/vmail folder it is empty!
How can i do!?

Can you help me please?
I wanto use EHCP.
Thanks and regards.

The first error says exactly the problem:
"fatal: main.cf configuration error: virtual_mailbox_limit is smaller than message_size_limit"

edit your main.cf, and increase your virtual_mailbox_limit, to be larger than message_size_limit

if this occured with default install in Ubuntu, then, we should check it also.. the default install should not have this problem, in Ubuntu.

Hi, yes, i set virtual_mailbox_limit = 250857600 larger than message_size_limit = 104857600 and it works, but i think there's a bug becaus i find in main.cf virtual_mailbox_limit_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailbox_limit_maps.cf, so it has to take limit from db ehcp, table emailusers, field quota. Is it true!?

Thanks