[Mailman-Users] Yahoo spam detection

Steven D'Aprano steve at pearwood.info
Fri Dec 26 00:31:49 CET 2014

On Tue, Dec 23, 2014 at 01:13:35PM +0900, Stephen J. Turnbull wrote:
> Steven D'Aprano writes:
>  > Some of my Yahoo subscribers are reporting that emails from my
>  > mailing list are being flagged as spam. As far as I can tell, I'm
>  > not using spammy words, and the emails are plain text not HTML. I
>  > have SPF set up.
> I think it might be helpful to set up DKIM as well.  The standard
> prohibits differentiating between unsigned mail and mail with a failed
> signature, but you are allowed to decrease spamminess scores for a
> successful signature verification, and also for From alignment (aka
> DMARC pass).  (Yes, I believe that Yahoo conforms to standards in this
> respect, though I can't be sure.)

Okay, I will look into that.

> The FAQ as mentioned by Mark already (fastest consult in the West!):
> http://wiki.list.org/x/4oA9
> A useful tidbit from that FAQ: Yahoo's feedback loop is at
> http://feedbackloop.yahoo.net/index.php
>  > X-IronPort-Anti-Spam-Filtered:
>  >     true
> I hate IronPort.  My employer uses it and enables [SPAM] subject tags,
> so it's *really* obvious that about 40% (!!) of spam is *not* caught,
> and on the other hand about 15% of ham is tagged SPAM or SUSPECT SPAM.
> Why bother?

But it's from Cisco, so you know it must be good! I've seen people on 
the Internet make exactly that claim: it is sold by Cisco, therefore you 
know it must be reliable.


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