On Thursday, May 26, 2011 03:21:19 PM Steve Atkins wrote:
If the reputation of the MLM is poor enough that mail from it is not being
delivered, trumping that with an authors reputation may get individual
emails delivered - but not threads, so it doesn't really improve the value
provided to the recipient (it probably decreases it - a mailing list that
delivers one in ten posts to my inbox is less useful than one that
delivers none at all).
I think this has it rather backwards. If mail From (body From) a certain
domain arrives 999 time with a valid DKIM signature and on the 1,000th time it
arrives with either no signature or a broken one, then that's a negative
anomaly in the mail stream that receivers are quite likely to take notice of.
While ADSP is the public whipping boy for this, there are plenty of private
efforts based on doing exactly this.
The question isn't do I trust the ML or not. For domains with a non-trivial
number of users the overall mail system will have no idea about what ML should
be trusted or not. The question is how harshly do I treat this message based
on the lack of a good signature.
Scott K
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