I have a need to perform local delivery based solely on the user that is authenticated with SMTP. The logic I'm trying to accomplish looks like this:

1. Joe's email client connects to my Courier via SMTP

2. Joe's email client provides credentials and Courier authenticates as user Jo...@Domain.com

3. Courier allows the connection, but rather than deliver to Bo...@AnotherDomain.com, Courier does a local delivery to a Maildir

Later, another process will pickup mail in the Maildir via POP3 and do some other formatting to the message before finally queuing it to be delivered as normal (i.e. to Bo...@AnotherDoamin.com)

Note that the original email will look like this:

From: Jo...@Domain.com To: Bo...@AnotherDomain.com Subject: Hi

And because Joe's client is a normal client it will do this on the SMTP handshake when delivery the message in the first place:

EHLO Domain.com MAIL FROM: <Jo...@Domain.com> RCPT TO: <Bo...@AnotherDomain.com>

Courier's normal behavior is to simply relay the message, and NOT do a local delivery? Is there some way to force a local delivery based on the fact that "Jo...@Domain.com" is the authenticated user?

Thanks!

-Ryan