Postfix with IMAP

Hi, I have 2 quick questions about working with
Postfix and DBMail:

1.  What is the proper way to reference my virtual
domains in Postfix?  Everything I read tells me to
NEVER EVER put "Virtual Domains" in $mydestination. 
But if I don't, my mail always bounce back with "user
unknown" error.  I added an entry virtual_maps =
hash:/etc/postfix/virtual to hint Postfix about my
virtual domains, but that didn't seem to work.  I have
to put virtualdomain.tld into $mydestination.  Can
someone tell me the proper way to do virtual domains
with Postfix?  Is there another map that I'm leaving
out or something?

2.  When I use dbmail-imapd and Outlook Express 6, on
the first access for a new user I created in dbmail,
dbmail creates a lot of duplicate folders.  This is
what I see under OE6.

INBOX
  |
Sent Items
  |
Drafts
  |
mail
  |
  ->Sent
  |
  ->Drafts
  |
  ->Trash

Is this normal? There seem to be a lot of overlap with
Sent Items and Drafts folder.  What are mail and all
its subfolders used for?  Is it a compatibility issue
with OE6 and IMAP?

Sorry if these topics have been covered.  I tried
searching through the archives, but it was a bit
difficult without the search capability.  DBmail is
awesome by the way.  Props to the development team for
providing such a great software at such a great price.
 :)

David


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