> In proxy and director configuration you can configure only the passdb lookup.

Thanks. I got my installation working yesterday. I have proxies for LMTP and 
IMAP (no POP3) backed by a farm of Dovecot servers. The IMAP proxy listens on 
70 different IPs/ports and does passdb lookups to authenticate the users based 
on the incoming IP/port. The passdb lookups select the particular backend 
server containing the user’s mailbox. SMTP (Postfix) does authentication 
through the IMAP proxy and mail delivery through the LMTP proxy. I haven’t 
bothered to set up an SMTP proxy yet, since my SMTP server will only handle 
submission and not relay. Submitted messages are queued to a Redis queue for 
importation into a MySQL database where the messages are held giving the sender 
the ability to edit/delete their messages before midnight. Messages are sent 
out to the recipient mailboxes in the early morning through another internal 
SMTP server talking to the LMTP proxy. 

For my site, I only want to delivery new messages once a day (in the early 
morning) with the sender/mailbox admin having the opportunity to edit/delete 
the messages the day it is sent by the sender.

All appears to be working well, but I’m currently only doing SSL/TLS on the 
edge (in SMTP/IMAP) and haven’t figured out how to do SSL from end to end. I’m 
not sure if end to end SSL is important for my site, but it seems to be a trend 
that should not be ignored.

Kevin

> On Jun 8, 2016, at 3:49 AM, Alessio Cecchi <ales...@skye.it> wrote:
> 
> 
> 
> Il 07/06/2016 17:42, KT Walrus ha scritto:
>> If I’m running only imap-login service in my dovecot imap proxy, do I need 
>> to configure userdb or only passdb?
>> 
> 
> In proxy and director configuration you can configure only the passdb lookup.
> -- 
> Alessio Cecchi
> Postmaster @ http://www.qboxmail.it
> https://www.linkedin.com/in/alessice

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