ietf-mxcomp
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Re: A 40% solution?

2004-05-13 11:40:31


On May 13, 2004, at 12:00 PM, Marshall Rose wrote:
there isn't a concise list of the inputs and outputs.


I'm a bit confused too.

Let me try to stepify what you are saying:

Step 1: obtain domain name from HELO/EHLO

Step 2:  DNS query
input:   domain name
output: "MARID level" (this is a policy acceptance level), list of reputation services, some flags

Step 3: DNS query
input:  rDNS of SMTP source in _HELO.domain tree
output: "MARID level"

Step 4: query reputation service(s)

Step 5: If match, report "good"

Step 6: obtain domain name from email address of MAIL FROM

Step 7: DNS query
input:   domain name
output: "MARID level" (this is a policy acceptance level), list of reputation services, some flags

Step 8: DNS query
input:  rDNS of ?????? in _MAILFROM.domain tree
output: "MARID level"

Step 9: query reputation service(s)

So, what is the "MARID level" in step 2 used for?
And where does the IP address for Step 8 come from?

-andy


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