dovecot - Nov 2010 - Use a different usename than the recipient address (that require a lookup)?

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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On 11/08/2010 01:42 PM, Zhou, Yan wrote:
> 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).
>
	Most of my users just use their usernames as their mail directories. 
But, I have one I had to do something like

   userdb passwd-file {
      args = /etc/dovecot/users
   }

and then define in /etc/dovecot/users for that user where his maildir is.

Another option would be to use aliases in postfix.
> 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?
>
	If you use virtual domains, you could specify where the emails go using 
virtual_mailbox_maps.
> 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.
>
	Why?
> Thanks,
> Yan
>
> NOTICE: This email message is for the sole use of the intended recipient(s)
>   and may contain confidential and privileged information. Any unauthorized
>   review, use, disclosure or distribution is prohibited. If you are not the
>   intended recipient, please contact the sender by reply email and destroy
all
>   copies of the original message.
>
> This message has been content scanned by the Axway MailGate.
> MailGate uses policy enforcement to scan for known viruses, spam,
undesirable content and malicious code. For more information on Axway products
please visit www.axway.com.

On Mon, 2010-11-08 at 13:42 -0500, Zhou, Yan wrote:
> 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).
If there is e.g. "mail" field that contains "dovecotdemo at
domain" value,
you could set for example:

user_attrs = uid=user, (other attributes)
user_filter = (|(uid=%u)(mail=%u))