Sorry, Len, but I'm going to keep correcting you.
"Content-scanning" isn't at issue here (unless you choose for it to be).
I'm recommending blocking subscriber networks, which has nothing to with content-scanning.
To determine the FP ratio (which you keep talking about!), you must accept the E-mail.
and how is that "correcting" me?
Accepting the DATA command, and reading/scanning/analyzing it for il/legitimacy (eg, FP) IS content-scanning. I never said it wasn't so there's nothing to correct.
And for some reason, a significant number of Declude and/or Sniffer clients have decided to install IMGate.
That "for some reason" sounds like an attack.
Not at all. You know your clients better than I do, why not propose reason(s) why Declude/sniffer clients add IMGate?
Other mail admins choose to keep the crap out of their networks, rejecting before the DATA command, and handle complaints case by case. They are not fixated on false positives.
That's because you preach to those admins that there is no need to worry about false positives.
I never preach that or that to anybody. And you keep condescending to that group, as if they were a bunch of sheep incapable of judging for themselves what results their MX policies are producing, and the level of satisfaction of their users.
You show phony data (like the post that started this thread) that makes it look like your ACL test has 0 false positives
I posted the FROM and HELO data (and the qty of unknown user rejects) for Charer PTRs so people could judge for themselves. That log data was not my "opinion" and was in no way bogus.
-- when in fact it does.
"in fact"? Show specific examples what you think are FPs. Then, while you're at it, calculate the FP rate.
You change the meanings of anti-spam terms to meet your needs.
I clearly defined what I meant by illegitimate and why FPs weren't possible under that definition. Again, anybody sending from subscriber networks is illegitimate, period. The burden is on them to prove they are legitimate, show their credentials, and seek relief from blocking.
Can I ask you why you bothered posting all that data
To show the volume and kind of crap that comes from subscriber networks, and why declaring them illegitimate is a reasonable and effective policy.
Blocking subscriber networks is not in any way a radical or innovative policy, as it has been, and is, the continuing practice of many mail admins to define ACLs that block entire country's TLDs, or Class A's (eg, apnic), 100s of Class Cs, or PTR domains (eg, flowgo) or 100's of @sender.domains (eg, the list compiled at imgfx by Declude users, or spamdomains at easynet.nl ) for exactly the same reason: it's effective and reliable based on the crap and behavior originating from those sources.
rather than just saying "I choose to consider any E-mail that fails my ACL test as illegitimate
In the case of subscriber networks, I said EXACTLY that.
therefore my ACL test has no false positives."
I said EXACTLY that.
Len
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