[imp] Character Encoding Problem

[Pablo Guaza Peces]

Hi list!
In my company we work with Request Tracker (RT), an application to 
manage tasks commonly by a community of users. This application sends 
email with an ISO enconding in the "From:" field if it contains accents. 
This is an example of the mail header sent by this application:

 >From postmast Wed Apr 30 12:26:31 2008
Return-Path: <apache at moncloa.ti.uam.es>
Received: from asterix.ti.uam.es (asterix.ti.uam.es [150.244.9.35])
by galia.ti.uam.es (8.13.7/8.13.4) with ESMTP id m3UAQPlC002595;
Wed, 30 Apr 2008 12:26:26 +0200 (MEST)
Received: from moncloa.ti.uam.es (moncloa.ti.uam.es [150.244.9.44])by
asterix.ti.uam.es (8.12.11.20060308/8.11.3/UAM) with ESMTP id
m3UAQK74017328;Wed, 30 Apr 2008 12:26:20 +0200
Received: from moncloa.ti.uam.es (localhost [127.0.0.1] (may be forged))by
moncloa.ti.uam.es (8.13.1/8.13.1) with ESMTP id m3UAQFl4019790;Wed, 30 Apr
2008 12:26:15 +0200
Received: (from apache at localhost)by moncloa.ti.uam.es (8.13.1/8.13.1/Submit)
id m3UAQFv7019789;Wed, 30 Apr 2008 12:26:15 +0200
Managed-BY: RT 3.6.1 (http://www.bestpractical.com/rt/)
MIME-Version: 1.0
Subject: 
=?iso-8859-1?Q?[TI_=23272579]_probando_acentos_=E1_=E9_=ED_=F3_=FA?=
In-Reply-To:
RT-Ticket: TI #272579
References: <RT-Ticket-272579 at uam.es>
Precedence: bulk
Content-Type: text/plain;
charset=iso-8859-1
Reply-To: cau at uam.es
Message-ID: <rt-3.6.1-1257-1209551175-1561.272579-3-0 at uam.es>
X-RT-Loop-Prevention: TI
Content-Transfer-Encoding: 8bit
BCC:
RT-Originator: mer.gimenez at uam.es
* From: "=?ISO-8859-1?B?TWVyY2VkZXMgR2lt6W5leiBCYXJyaW8=?= v�a GI-TI" 
<cau at uam.es>*
X-RT-Original-Encoding: utf-8
Date: Wed, 30 Apr 2008 12:26:15 +0200
X-imss-version: 2.050
X-imss-result: Passed
X-imss-approveListMatch: *@*.uam.es

My problem is that this email is shown in the IMP Inbox with the "From:" 
field just as I wrote it here, not decoded. The weird thing is that if 
you access the mail content clicking on it, it is written decoded, that 
is, as it should be.

Does anybody know if this is a bug or i can't fix it changing some 
configuration file?

Thanx

-- 
Pablo Guaza Peces
Tecnologías de la Información 
Unidad Técnica de Infraestructuras de Equipos Centrales
http://rincon.uam.es/cgi-bin/v2/dir.cgi?cw=658050537109375