[Dovecot] Use a different usename than the recipient address (that require a lookup)?

[Zhou, Yan]

Hi there, 

I am integrating Postfix and DoveCot, both use LDAP to look up
user/email address info. My question is this: can I create a user
"jsmith" to get all emails with the recipient address:
dovecotdemo at domain?  Because of using LDAP, I need to do a lookup to
know that the user "jsmith" is getting emails for "dovecotdemo at domain",
NOT "dovecotdemo" (there will be no such user).

In postfix's master.cf, I can use LDA to deliver to DoveCot, which needs
to know the user name where the message should be delivered to. But I
would not know that at the time because I need to do a lookup in LDAP.
Does the DoveCot delivery agent have any way to allow me return a
different user name after LDAP lookup?

I would not want to modify a couple of files to accomplish that, because
I would have to do that for every email address created.

Thanks, 
Yan

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