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Re: [ietf-smtp] IETF Policy on dogfood consumption or avoidance - SMTP version

2019-12-25 23:06:55
On 12/26/19 12:03 AM, Dave Crocker wrote:

Any spam filtering practice based on EHLO tags is inherently dubious. Even if it happens to "work" for some site or another at some particular time, it's not defensible as good practice in general.

There is an appealing purity to such a view.  However...

Given a context that really is an arms race, criticizing an effective anti-abuse effort as being not defensible winds up having only two effects.  One is to make anti-abuse efforts less effective and the other is to alienate the folk whose job it is to do anti-abuse work.

It seems unlikely that either of those outcomes is defensible.

It seems unlikely that practices that further encourage the arms race, and further degrade the reliability of email, are defensible.


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