[racket-dev] Email encoding in net/sendmail

From: YC (yinso.chen at gmail.com)
Date: Tue Dec 20 16:37:48 EST 2011

On Tue, Dec 20, 2011 at 1:22 PM, Eli Barzilay <eli at barzilay.org> wrote:

> 2. There is still an issue with non-ascii content in the body.
>   Digging around, it seems to me that the easiest way to make it work
>   is to always add a "Content-Transfer-Encoding: 8bit" header.
>   Does anyone know if this is a correct way to do this?  (I'm not
>   clear about the differences between the different "content"
>   headers.)

8bit is not considered safe for SMTP - a SMTP server is 8bit safe if it
supports 8bitmime (see http://www.ietf.org/rfc/rfc1652.txt), but it's no
guarantee that 8bit-safe server will route only with 8bit-safe servers.

By default content are encrypted either via quote-printable or base64, with
the content-transfer-encoding set accordingly.

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