On Sat, 30 Oct 2004, Frank Ellermann wrote:
Roger Moser wrote:
v=spf1 sc=mfrom,pra a mx
sc=mfrom exists:%{l}._ses.example.com -all
That would be a new kind of positional modifier, not the
variant documented in SPF protocol-03.
Have you read new SenderID spec? If not let me quote something from it:
"3. SPF Records
Domains declare which hosts are and are not authorized to transmit email
messages on their behalf by publishing SPF records as defined in [SPF].
Sender ID employs SPF records, as described below, in order to determine
if a specific email message has been received from an authorized host.
Sender ID modifies the definition of SPF records as described in the
following sub-sections.
3.1 Positional Modifiers
This section replaces section 4.6.3 of [SPF] and adds the concept of
positional modifiers."
See http://www.microsoft.com/mscorp/twc/privacy/spam_senderid_downloads.mspx
and download the senerid_spec1.pdf
--
William Leibzon
Elan Networks
william(_at_)elan(_dot_)net