You have a very good point here. ISPs should limit the number of lookups to
9 or 8 so that a customer could use "include:ISP.com". Is this noted as a
SHOULD in the spec?
As a non-ISP, if I were to use 2 different ISPs, 1 from home and 1 on the
road, I would need to use 2 includes and maybe MX. In this case the ISPs
would need to be at 4 lookups each!
It seems like this does not scale well.
Guy
-----Original Message-----
From: owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
[mailto:owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com] On Behalf Of Alex
van den Bogaerdt
Sent: Thursday, March 17, 2005 11:47 AM
To: spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
Subject: Re: [spf-discuss] RE: rr.com and SPF records
On Thu, Mar 17, 2005 at 11:31:09AM -0500, Todd Herr wrote:
For example, a customer may send email from
"joe(_at_)austin(_dot_)rr(_dot_)com":
# dig +sho austin.rr.com txt
"v=spf1 redirect=texas.rr.com"
# dig +sho texas.rr.com txt
"v=spf1 ip4:24.93.47.0/24 ip4:24.28.204.15 ip4:24.28.204.16 +mx ~all"
The customer may also send mail from "joe(_at_)mydomain(_dot_)tld" and relay
it through your servers. This means your customer wants to be able
to include your spf record into his own:
v=spf1 ip4:${ip_address_of_customer} include:austin.rr.com -all"
I hope you take this in consideration as well.
Are you saying here that our outbound servers (not collected in
any one particular domain) also require SPF records? If that's
true, when might the FAQ be updated?
What about the HELO parameter?
Alex
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