Email module, how to add header to the top of an email?

Karlheinz Klingbeil karlheinz.klingbeil at gmx.net
Sat Jan 26 11:10:14 CET 2008


Am 26.01.2008, 01:46 Uhr, schrieb David Erickson <halcyon1981 at gmail.com>:

>    It is important to note that the header fields are not guaranteed
> to
>    be in a particular order.  They may appear in any order, and they
>    have been known to be reordered occasionally when transported over
>    the Internet.  However, for the purposes of this standard, header
>    fields SHOULD NOT be reordered when a message is transported or
>    transformed.  More importantly, the trace header fields and resent
>    header fields MUST NOT be reordered, and SHOULD be kept in blocks
>    prepended to the message.  See sections 3.6.6 and 3.6.7 for more
>    information.
>
> Trace header fields are not to be ordered, and should be prepended
> when added to a message.  Now that said I am not trying to track
> anything, I simply want to prepend my additional headers onto the top
> of the email, and seem to be unable to do that via the API, which I
> think ought to be possible.  If for example I was writing some kind of
> an SMTP server with Python and needed to add said trace headers they
> would need to be prepended, and currently cannot be (without doing it
> by hand).
>
> -David
You're right on that point, though it says clearly "It is important to
note that the header fields are not guaranteed to be in a particular  
order."

So it's in my opinion a good idea not to expect headers to be ordered and
add headers in a way which doesn't conflict with a *possible* reordering.


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