[Exim] Many domains with Exim + Pop + Imap + WebMail

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I need to mount a mail server that manage many domains (50-100), with various email adress per domain.

I want to use exim, and need pop and imap access. Also, is better if I offer a webmail system. I will to store accunt data in a ldap o mysql server.

Then what imap server i need to use ? And webmail system ?



I try with courier-imap (my actual server is qmail) for the maildir format, but I can't know how to change the mailbox directory to access as <domain>/<mail account>. Is posible to do it ?




Thanks in advance.


ADM

p.s.: sorry for my bad english. I speak better french and spanish.
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