[imp] Weird behavioh while using multiple identities

[Leonardo Bruno]

Hi, everyone!

I work for a government institution and I have a Horde Groupware 5.2.2  
setup running perfectly on a Debian 8 box. I used the official Debian  
packages.

Here we need to have 'departmental' accounts e.g. it at example.com.

What we used to do in the past is to create real accounts and share  
the passwords with the people that should access this dept account.  
Just imagine the myriad of problems that gave us...

Well, now we use shared namespaces and IMAP ACLs. Postfix/LDAP/Dovecot  
are all set up so the messages sent to 'it at example.com' will be  
delivered in a shared folder 'IT' created under the 'Dept. folders'  
namespace. The 'IT' folder's ACL include all IT people so they will  
log into IMP, see the 'IT' folder and all the messages sent to  
'it at example.com' *inside* their own accounts. These people will also  
be able to send messages as 'it at example.com' thanks to the identities  
added to their Horde/IMP preferences.

Almost everything works perfectly, except in this case:

A hypothetical IT guy 'jhondoe at example.com' open a new message window,  
chose 'From:' field as 'it at example.com' and send a message to  
'janedoe at example.com', a user of the same LDAP/Dovecot/Postfix/Horde  
ecosystem that 'jhondoe at example.com' and 'it at example.com' belong to.

Jane receive and reads the Jhon's message and decides to reply it:  
with the message selected, she clicks 'Reply' button and a new message  
window opens with the 'To:' field empty. It also happens if Jane  
clicks 'Reply > To all' in dropdown 'Reply' menu.

However, if Jane selects Jhon's message and clicks 'Reply > To  
Sender', the 'To:' field appears correctly filled with 'it at example.com'.

I firstly thought that this was due to some mistake in the  
'it at example.com' identity that 'jhondoe at example.com' used, but if we  
reproduce the same use case now sending the message to  
'janedoe at gmail.com' (note the 'external' destination) everything works  
as expected: the Gmail 'Reply' button starts a response to  
'it at example.com'.

Anyway, here is the source of the message Jhon sends to Jane, as she received:

Return-Path: <it at example.com>
Delivered-To: <janedoe at example.com>
Received: from my-mda-server.example.com
	by my-mda-server.example.com (Dovecot) with LMTP id ThePKdOQSVmNKQAAMzZZ2A
	for <janedoe at example.com>; Tue, 20 Jun 2017 18:17:07 -0300
Received: from my-mta-server.example.com (my-mta-server.example.com  
[xx.xx.xx.xx])
	by my-mda-server.example.com (Postfix) with ESMTPS id A842E20D57
	for <janedoe at example.com>; Tue, 20 Jun 2017 18:17:07 -0300 (-03)
Received: from my-horde-server(my-horde-server.example.com [xx.xx.xx.yy])
	by my-mta-server.example.com (Postfix) with ESMTPSA id A83CCE008E
	for <janedoe at example.com>; Tue, 20 Jun 2017 18:17:06 -0300 (-03)
Received: from local-workstation.example.com  
(local-workstation.example.com [xx.xx.xx.zz])
	by email.example.com (Horde Framework) with HTTP; Tue, 20
	Jun 2017 21:17:06 +0000
Date: Tue, 20 Jun 2017 21:17:06 +0000
Message-ID: <20170620211706.Horde.ZOGCDy94v4SQBO4UDLSeWA1 at email.example.com>
From: DITIC <it at example.com>
To: Jane Doe <janedoe at example.com>
Subject: Test
Reply-to: it at example.com
User-Agent: Internet Messaging Program (IMP) H5 (6.2.2)
Content-Type: text/plain; charset=UTF-8; format=flowed;  
DelSp=YesMIME-Version: 1.0
Content-Disposition: inline

Any help?
Thanks in advance.


-- 
Atenciosamente,
Leonardo Lopes
DITIC/CEFET-MG


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