Hi,
I was thinking about SPF last night and two issues occurred to me:
1) If your main domain (example.com) has a couple of MX records, the
lower numbered one being the actual mail server, and the higher one
being (say) the ISPs mail server (isp.net), then some of the inbound
mail that example.com will see will be coming from isp.net. Clearly you
cannot run the SPF rules on the mail from isp.net, but what is the
recommended way to avoid doing this? What about running SPF internal to
your organization? How does the gateway MTA distinguish inbound mail?
2) I would like to see a directive in the TXT record that said
'jump:domain' This is just like include, but doesn't come back. The
problem is that you have to have the 'default' and 'exp' fields on the
initial domain. As I read the draft, they don't take (useful) effect
elsewhere.
Maybe these have already been discussed, but I couldn't find the mailing
list archives to check.
Philip
--
Philip Gladstone 978-ZEN-TOAD (978-936-8623)
Cisco Systems, Inc Boxboro, MA
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