Re: [exim] Horribly broken subject line, and deliverability.

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Autor: Phil Pennock
Data:  
A: Ernie Dunbar
CC: exim-users
Assumpte: Re: [exim] Horribly broken subject line, and deliverability.
On 2010-06-14 at 16:24 -0700, Ernie Dunbar wrote:
> Occasionally, some of our customers have a need to send messages with
> subject lines like this:
>
> Subject:
> =?iso-8859-1?Q?FW:_Notice/Avis_Canada's_Energy_Efficiency_Regulations_-_P?=
>
> =?iso-8859-1?Q?re-publication_Amendment_11_---_R=E8glement_sur_l'effica?=
>
> =?iso-8859-1?Q?cit=E9_=E9nerg=E9tique_du_Canada_-_Publication_pr=E9alable?=
>         =?iso-8859-1?Q?_Modification_no_11?=

>
> As you can imagine, this is not totally uncommon in Canada.
>
> However, our Exim configuration will not deliver this message, and it
> doesn't even give a reasonable error message except that the message
> failed.
>
> I either need to fix this, or make Exim give the user a good excuse for
> not working.


You're not building with HAVE_ICONV=yes perhaps? And then are doing
some system filter check which fails? Or you built Exim with HAVE_ICONV
but HEADERS_CHARSET which doesn't include support for the iso-8859-1
characters you're seeing (eg, US-SASCII)?

Perhaps logs would help, or an entry from paniclog, or the result of
looking at { exim -d -oX 26 -bd } output when you telnet to port 26 and
use SMTP to send a copy of such a mail, pasting in the bad subject?

If I create a file "foo.eml" containing:
----------------------------8< cut here >8------------------------------
From: Phil Pennock <exim-users@???>
To: Phil Pennock <exim-users@???>
Subject:
        =?iso-8859-1?Q?FW:_Notice/Avis_Canada's_Energy_Efficiency_Regulations_-_P?=
        =?iso-8859-1?Q?re-publication_Amendment_11_---_R=E8glement_sur_l'effica?=
        =?iso-8859-1?Q?cit=E9_=E9nerg=E9tique_du_Canada_-_Publication_pr=E9alable?=
        =?iso-8859-1?Q?_Modification_no_11?=
Date: nowish


foo
----------------------------8< cut here >8------------------------------

and then invoke { exim -bem foo.eml } then:
> $h_subject:

FW: Notice/Avis Canada's Energy Efficiency Regulations - Pre-publication Amendment 11 --- Règlement sur l'efficacité énergétique du Canada - Publication préalable Modification no 11
>


Decodes just fine here.

-Phil