Postfix cyrus virtual mailbox domains problem

[Martin Haywood]

I've been going around and around this problem for so long it's making 
me dizzy ...

I have Postfix set up with
  main.cf:
      virtual_mailbox_domains = /usr/local/etc/postfix/virtual_domains
      virtual_mailbox_base = /var/mail/virtual/domain
      virtual_mailbox_maps = hash:/usr/local/etc/postfix/virtual_mailbox
      virtual_minimum_uid = 100
      virtual_uid_maps = static:5000
      virtual_gid_maps = static:5000
      virtual_alias_maps = hash:/usr/local/etc/postfix/virtual
  virtual_mailbox:
      [EMAIL PROTECTED]         my_v_domain.tld/user/vuname/
I have set up imapd to use partition as follows:
  imapd.conf
      partition-vpart: /var/mail/virtual
And created mailbox in cyradm as follows:
  localhost> cm [EMAIL PROTECTED] vpart
  localhost> sam [EMAIL PROTECTED] [EMAIL PROTECTED] all
So when a mail is sent to [EMAIL PROTECTED] it appears in the
directory /var/mail/virtual/domain/my_v_domain/user/vuname
but cyrus cannot see it as it's in the subdirectory "new".
Anyway I have a feeling I'm barking up the wrong tree here.  Just how
should I be letting cyrus find mail delivered by postfix "virtual" 
delivery
agent (as in this case)? Is there something stupid about my setup, other
than I have a feeling cyrus and postfix aren't meant to share the same
directory for mail storage.

Any help greatly appreciated.
  Martin
---------------
Martin <[EMAIL PROTECTED]>
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