[exim] Horribly broken subject line, and deliverability.

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Autor: Ernie Dunbar
Datum:  
To: exim-users
Betreff: [exim] Horribly broken subject line, and deliverability.
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.