> What I want to do is to look up the local part of the address in LDAP
> to find the name of the actual host which should be the final destination
> of each e-mail and deliver the message directly to that host using SMTP
> without using MX records (it is not politically acceptable to use
> subdomains e-mail addresses, nor to use an aliases file).
>
> If I use a localuser director, I can't see how to tell the SMTP transport
> to connect directly to a specific host.
I do exactly that by a smartuser director with the condition that the
user is found in the directory and a smtp transport where hosts is set using
the mailbox attribute of the users directory entry.
I use this setup for having more than one mail box server, which allows easy
scalability.
Michael
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