Beware the TINS Army

When consulting with clients, I spend a lot of time trying to help them better understand the concept of sender reputation. Spam reports, feedback loops, and other data that comes from a collection of positive and negative reputational feedback about a company sending email.
Certainly, the “This is not spam” action – moving an email from the spam folder to the inbox, or clicking the “not spam” button in a web mail’s interface, is a strong positive reputational action. Some webmail providers use this data to decide which bulked senders deserve being let out of the penalty box – which should have their mail once again delivered to the inbox.
A client recently theorized that a great solution to their delivery problems would be to do this “en masse.” Sign up for hundreds or thousands of webmail accounts, send my mail to them, and click on the “not spam” button for each of my own emails. That’ll greatly improve my sending reputation, right?
NO! ISPs have already thought of this. They watch for this. They’re really good at picking up on things like this. I know for a fact that Yahoo and Hotmail and AOL notice stuff like this, and I strongly suspect other webmail providers notice it as well.
What happens when Yahoo or Hotmail pick up on this type of unwanted activity? Well, if it’s at Yahoo, they’re likely to block all mail from you, 100%, forever. I’ve seen it happen more than once. Yahoo might even identify all of your netblocks, ones beyond the ones sending today’s mail or originating today’s activity. And good luck trying to convince them that you’re not a spammer – you have a better chance of winning the lottery two weeks in a row.
As for Hotmail – what would Hotmail do? Ask Boris Mizhen. Microsoft is currently suing him, alleging that he and/or his agents or associates engaged in this very practice.

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How reputation and content interact

Recently, one of my clients had a new employee make a mistake and ended up sending newsletters to people in their database that had not subscribed to those particular newsletters. This resulted in their recipients getting 3 extra emails from them. These things happen, people fat-finger database queries or aren’t as careful with segmentation as they should be.
My clients were predictably unhappy about sending mail their users hadn’t signed up for and asked me what to do to fix their reputation. I advised they not do anything other than make sure they don’t do that again. The first send after their screw-up had their standard 100% inbox delivery. The second send had a significant problem with bulk foldering at Hotmail and Yahoo. The third send had their standard 100% inbox delivery.
So what happened on the second send? It appears that on that send they had a link or other content that “filled the bucket.” Generally, their IP reputation is high enough that content isn’t sufficient to send their mail into the bulk folder. However, their reputation dipped based on the mistake last week, and thus the marginal content caused the bulk foldering.
Overall, these are senders with a good reputation. Their screw up wasn’t enough to damage their delivery itself, but may have contributed to all their mail going into the bulk folder the other day. I expect that their reputation will rebound quickly and they will be able to send the same content they did and see it in the inbox.

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Botnets

Terry Zink has been posting articles about botnets as traced by Hotmail. I do not often talk about botnets as they are outside my area of expertise. They are not something I deal with, as no one who uses botnets is welcome as a client here.
My clients and I, however, do have to deal with the fallout from botnets.  Because of botnets, receiver ISPs are extremely suspicious of mail from any IP address that they have not seen mail from previously. Mail from new IPs is, more often than not, a newly infected Windows machine. This results in mail from new IPs not starting with a reputation of zero but starting with a negative reputation.
Botnets are another example of spammers making it more difficult for mailers with permission to use email.

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I don't have a "this is spam" button

Here at Word to the Wise we have some unique requirements for mail. For instance, I need to be able to receive examples of emails that are being blocked elsewhere in order to do my job. This means not only do we not outsource mail to someone else, we also run limited spam filtering on the server side. It does mean I have to wade through a bit more spam than others do, but that’s generally not a problem. My client side filters do a decent job at keeping most of the crud out of my mailboxes.
My work account gets very little spam in the folder I use as my inbox. I’m not even sure exactly why this is, but it’s true. One of the exceptions is a psychic (no, really) who has a copy of one of my work email addresses and she regularly spams me offering her spiritual guidance and the opportunity to buy her stuff in order to make peace within my world.  I’ve received these before, usually I just delete them and move on.
Occasionally, though, I long for the ease of a “this is spam” button. Just to be able to hit a single button, no work, no effort and know that I have registered my frustration with a spammer. Today was one of those days. I really don’t want this psychic spam in my mailbox. It seems reasonably professionally done, though, so I check the headers to see if it’s being send from any ESP I know and if it’s worth my time to send in a “hey, didn’t sign up for this, and no, I didn’t forget, either” email.
I visited the website belonging to the domain sending the mail.

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