ietf-dkim
[Top] [All Lists]

Re: [ietf-dkim] canonicalized null body and dkim

2006-12-15 10:30:20


--On December 15, 2006 7:58:39 AM -0800 Michael Thomas <mike(_at_)mtcc(_dot_)com> wrote:

The thing that I've seen is that at the very least sendmail will
strip a body with a single CRLF to a null body in its output stage;
I would not be surprised to hear that other MTA's do similar
transformations.

Um... to the best of my knowledge, sendmail will never strip any data, including trailing CRLFs. It will /add/ a CRLF under certain circumstances, which include when mailing to a local v7 mailer that requires a double CRLF between messages.

However, Tony is completely right about the ambiguity, except that it's actually larger than he says --- it appears the draft doesn't clearly specify whether you canonicalize then truncate, or truncate then canonicalize. The only one that actually makes sense from an interoperability sense is to canonicalize and then truncate. By this reading, l=0 would not include a trailing CRLF.

Is my logic logical?

eric
_______________________________________________
NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html