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From: "Norbert Koch" <NKoch@demig.de>
To: <gerard-seibert@suscom.net>, <freebsd-questions@freebsd.org>
Date: Tue, 19 Jul 2005 17:18:51 +0200
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Subject: RE: `Content-Transfer-Encoding' & SendMail
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> I have SendMail configured with the Smart_Host directive:
> 
> define(~SMART_HOST'. `my.isp.com') since they are blocking out bound
> port 25. This works well.
> 
> The problem I am experiencing is that all mail sent this way has the
> following in the email header:
> 
> Content-Transfer-Encoding: quoted-printable
> 
> I do not want to use that encoding specifically at all times. Even when
> set within my mail program for something else, such as 8-bit, it is
> still converted to the above format.
> 
> What can I do to prevent this from happening?

>From my naive understanding of the smtp protocol I think
that your sendmail and your provider's sendmail|qmail|postfix
ask each other about supported encodings.
When I telnet to my mail provider's port 25 and manually
submit an EHLO I see a list of 250 responses. One shows
me '250 8bitmime'. So I'd suggest you test this with
your provider.

Norbert