Bill Seligman wrote:

> I've been trying to get DomainKeys to work on my mail server. I know
> this is not the DKIM newsgroup, but there's one issue I'd like to know
> about before I dismiss it as the cause of the problem.

I believe I have isolated my DomainKey issue, and as stated elsewhere (I
haven't bothered to quote the discussion), it does not appear to have
anything to do with header folding. But it still appears to have
something to do with sendmail, so again I ask for assistance.

The problem appears to be that in the message passed to the DKIM
software, a header reads:

To: sa-test@sendmail.net

But according to the sa-test reflector, the message they receive has:

To: sa-test@sendmail.net

In other words, something has removed an extra space after the "To:" in
the header, which breaks the DKIM signature. The "To:" header is
apparently the only header for which this happens.

Now I must ask what are probably the most inane questions posed to this
newsgroup: What portion of the sendmail process might control the
reformatting of the "To:" header to eliminate extra spaces? Or the
opposite question: what could put an extra space in the "To:" header in
the first place?

-- Bill

P.S.: An editorial: It's issues like this that convince me that
DomainKey is still not a robust enough signature method to deal with the
"real world" of e-mail.