But something needs to calculate the ip addresses according to a fixed set
of mathematical rules. IF not then a whole set of new rules needs to be
created to create the ip addresses. These rules need to be defined and as
present they are not defined and open to interpretation.
What does the following mean.
smtp.example.com. A 192.167.1.25
mx.example.com. A 192.168.1.19
example.com. MX mx.example.com.
example.com. TXT "v=spf1 a:smtp.example.com/28 mx -all"
Does it mean 192.167.1.25 192.168.1.19-192.168.2.18
OR DOES IT MEAN 192.167.1.25 192.168.1.0-192.168.1.255
Notice I am listing both the range and the mx single ip.
The answer is that it has 2 different meanings and the answer depends on who
is giving the answer.
NOTHING IN THE RFC DEFINES WHICH IS CORRECT.
----- Original Message -----
From: "Roger B.A. Klorese" <rogerk(_at_)queernet(_dot_)org>
To: <spf-discuss(_at_)v2(_dot_)listbox(_dot_)com>
Sent: Friday, July 30, 2004 12:03 PM
Subject: Re: [spf-discuss] mail administrator certification example
John Keown wrote:
All mail servers have routers built into the mail server as an underlying
method to handle and route email in addition to dns. It is accomplished
with
an or or an exclusive or operation which is a form of division. Therefore
the address space specified must be in this case by 256 which it is not.
But they don't route anything based on the information in the SPF TXT
record, so your claim is absurd.
-------
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