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Re: greylisting done at end of headers, or end of daya (QUIT) ?

2007-02-01 13:20:37

Tony Finch wrote:
On Wed, 31 Jan 2007, Hector Santos wrote:
Good Guys are 100% SMTP compliant. Bad Guys are not. Thats the theory and its

IME good guys are frequently not compliant. Broken HELO domains, invalid
return paths, refusal to accept MAIL FROM:<>, etc. etc.


Good point. I won't say "Frequently" myself, but sure, nothing is absolute.

In the market we are addressing, the anonymous one (no info to fall back on), we don't know who is "good person or bad person." When I say "good guy" I don't necessarily mean one that is your friend. Good in the sense they run a properly setup SMTP system and make no attempt to hide it. You really don't know if they are "good or bad" people.

The fact is that "bad guys", the one that really aren't your friend, by far, are using SMTP non-complaint almost and if not, by choice in some form or fashion. IMV the #1 dearth to SMTP progress is how do we deal with the legacy operation or one that behaves as one. I think the day we decide how to deal with legacy software (in a IETF standard fashion), is the day we begin to make progress in the AVS market.

But sure, some of the "good guys" do have poorly setup systems, and guess what? For us, they fall in the same category as everyone else. For me, it is rare exception that I personally have to white list a node that for some reason or another has some "bad" state or information they can't do anything about.