Currently on my old Server i am using Exim with Courier configured with Vexim over a Mysql Database. This is working for 7 Domains with 5 -20 User per each Domain. On my new Box we wanna have a new Mailsystem. If Users are stored in a LDAP Database, do i need a Mysql Database? And i am serching for a nice Howto to setup a Multidomain featured OX install with LDAP. We wanna use Exim or Postfix as MTA. For IMAP am flexible with courier or dovecot

really thank you for all suggestions

kind regard Darko