`Content-Transfer-Encoding' SendMail

2005-07-19 Thread Gerard Seibert
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?

-- 
Gerard E. Seibert
[EMAIL PROTECTED]

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Re: `Content-Transfer-Encoding' SendMail

2005-07-19 Thread Chuck Swiger

Gerard Seibert wrote:
[ ...relaying email via your ISP... ]

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?


Nothing, really.  Any MTA along the delivery path is allowed to change the 
encoding to quoted-printable, and many MTA's will do so even if the other side 
advertizes the 8BITMIME ESMTP extension.


You can avoid seeing that header if you send mail that does not contain 
non-printable characters, or if the receiving MTA converts the mail back to an 
8-bit format.


--
-Chuck
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RE: `Content-Transfer-Encoding' SendMail

2005-07-19 Thread Norbert Koch
 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
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Re[2]: `Content-Transfer-Encoding' SendMail

2005-07-19 Thread Gerard Seibert
On Tuesday, July 19, 2005 10:16:00 AM Chuck Swiger [EMAIL PROTECTED]
wrote:

 Gerard Seibert wrote:
 [ ...relaying email via your ISP... ]
  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?
 
 Nothing, really.  Any MTA along the delivery path is allowed to change the 
 encoding to quoted-printable, and many MTA's will do so even if the other 
 side 
 advertizes the 8BITMIME ESMTP extension.
 
 You can avoid seeing that header if you send mail that does not contain 
 non-printable characters, or if the receiving MTA converts the mail back to 
 an 
 8-bit format.
 
 -- 
 -Chuck


** Reply Separator **
Tuesday, July 19, 2005 6:46:32 PM

If I send a message through my ISP and do not use SendMail, the mail
arrives as I sent it. If I throw SendMail into the mix, it always
arrives as quoted-printable.

I checked with my ISP. They claim that the mail is being changed on my
end. They do not alter the Content-Transfer-Encoding method.

-- 
Gerard E. Seibert
[EMAIL PROTECTED]


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