On Fri, 31 Aug 2018 at 00:02, Michael Wise <michael.w...@microsoft.com> wrote:
> /me coughs discretely ...
>
> As I don't have the right crescent wrench to what this issue, I have 
> forwarded your concerns to the people who ARE in a position to get a better 
> understanding of these issues.
> There's a lot of conflicting signals that SmartScreen takes into 
> consideration, and a lot of ... obscure-on-purpose policies that affect how 
> the folks who are typically the ones to mitigate these issues are allowed to 
> do ... and yes, a lot of boilerplate, sometimes that doesn't seem ... on 
> point.
>
> /sigh
>
> I will do what I can.

Hi Michael,

Did you get any answer/update? Or is this still under investigation?
Or trashed as "uninteresting"?

Since I wrote the post (almost 4 weeks ago) the IP 188.165.188.85 is
still the only red IP in our 100+ IP list and it always kept his "red"
status in the last weeks. No new trap hits, no new FBL and complaint
rate fixed to "< 0.1%".
Brothers IPs in the same pool like 188.165.188.87 have been always
green, as before.

Stefano

> Aloha,
> Michael.
> --
> Michael J Wise
> Microsoft Corporation| Spam Analysis
> "Your Spam Specimen Has Been Processed."
> Got the Junk Mail Reporting Tool ?
>

> > -----Original Message-----
> > From: mailop <mailop-boun...@mailop.org> On Behalf Of Stefano Bagnara
> > Sent: Thursday, 30 August, 2018 17:40
> > To: mailop <mailop@mailop.org>
> > Subject: [mailop] SmartScreen weirdness
> >
> > Hi all, or I should probably say Hi Michael, :-)
> >
> > I manage a pool of 5 IPs shared by the same group of senders (>100 small 
> > senders).
> > IPs are 188.165.188.85..188.165.188.89. (please no OVH-flames)
> >
> > They are low volume and they sends the same things (emails are 
> > roundrobin-ed between the IPs). They share the same reputation of public 
> > reputation providers (99 on senderscore, good on Talos). They haven't been 
> > blacklisted recently (AFAIK).
> >
> > One of those IPs is RED on SNDS (188.165.188.85) and in fact, emails sent 
> > by that IP to new email addresses ends up in the Junk folder. The other 4 
> > IPs are GREEN and have always been GREEN and an email sent to a new 
> > recipient is sent to inbox. I say "new recipients" because if I send an 
> > email to an "old recipient" that is already reading that email flow the 
> > email is inboxed by both. It's hard to "debug" this from the outside 
> > because I need reports from "new users" or I'd have to create new hotmail 
> > accounts.
> >
> > In the last 2 months I received only 1 FBL for that IP, and a total of
> > 12 FBL from the other 4 IPs (not daily, 3 in the whole 2 months). SNDS 
> > doesn't report a single spamtrap hit. The volume recorded by SNDS is 
> > between 500 and 1000 messages per day from each IP. Complaint Rate is "< 
> > 0.1%" Trap Hits is 0.
> >
> > I filled the Microsoft Form (SRX1437934126ID ). They told me it's because 
> > of "SmartScreen" and that they are unable to offer mitigation for that IP.
> > The conversation included the "usual" template-based (telling me to use 
> > JMRP/SNDS) answers: got 4 of them until they stopped answering me begging 
> > for "details" or "escalation".
> >
> > I'd like to identify the issue (if there is a bad sender I'd like to simply 
> > kick him), but I don't have data to use to do my "homework". I also can't 
> > get why 1 IP is "so bad" while the other 4 in the same pool are pretty 
> > good, while they simply send the same stuff.
> >
> > I saw in past Microsoft IP based reputation have a very long memory, so I 
> > guess it must have something to do with very old sending history from that 
> > IP (I can't be sure if something bad happened years ago.. I don't think so, 
> > but I can't exclude it).
> >
> > I also don't understand what could be the reason behind the answer "the IP 
> > cannot be mitigated": is it because it is not blocked and mitigation 
> > happens for blocks that are not depending from SmartScreen?
> > Or is it because they are actively seeing bad inbound flow from the IP and 
> > the reputation is "so bad" that they can't mitigate it?
> >
> > Michael, do you have an answer for this "scenario" or this specific case?
> > Others: did anyone else see similar issues? How did you fix them?
> >

--
Stefano Bagnara
Apache James/jDKIM/jSPF
VOXmail/Mosaico.io/VoidLabs

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