Re: SMTP headers

At 09:38 14-09-2006, [email protected] wrote:
>we currently use a RTE (Reliable Transport Engine) to send emails 
>containing attachments. Although the attachments appear within the 
>e-mails' bodies as icons, in "heavy" mail clients, such as Lotus 
>Notes, Apple's Mail, etc., they don't show up in "light" mail 
>clients such as Web mail clients (www.excite.com, www.free.fr, etc.) 
>By comparing SMTP headers sent by our RTE and those sent by Mutt on 
>Linux, I have noticed that the former

That should be MIME headers.

>sends "attachment" headers which don't contain the attachments' contents :
>
>...
>--------14507F4DC80F4D6511158149340B40B01
>Content-Disposition: attachment; filename="test.txt"
>Content-Transfer-Encoding: 7bit
>
>Content-Type: Text/Plain

There shouldn't be a new line before the Content-Type line.  There 
file content was not "attached" in this version.

>Does anyone know how to force RTEs or MTAs such as sendmail to send 
>"attachment" headers of the second kind?

This is not a MTA or sendmail problem.  Sendmail doesn't send 
"attachment" headers.  Your RTE may not be formatting the message 
correctly before sending it to the MTA.  Refer to MIME for how the 
message body should be formatted.

Regards,
-sm