AOL FBL petering out

This is pretty clear evidence that AOL accounts are being transferred to the Oath / Verizon Media / Yahoo backend.

AOL has been slowly disabling their postmaster pages and I don’t trust them to provide accurate info any longer. I am also way of using the contact forms at AOL these days. It’s possible that no one is monitoring them.

Looks like the last of the AOL mail infrastructure is nearly gone.

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It's Thursday: AOL must be having problems

And, in fact, they are.
This time I’m seeing random reports of FBL failures. Some folks are seeing a significant (more than 50%) decrease in FBL emails. Other folks are reporting FBL reports that aren’t really FBL reports, but instead look like failed code output.
If you’re seeing this kind of problems it’s not just you.
As always, people at AOL are working to fix things and cooperating with people in the sending community who are having this problem. In other news, I found out last week that the one Really Smart Mail Guys I thought was still there is still at AOL but is no longer in their mail division. That means that the guys who built the AOL version of Skynet have left it to its own devices. Be afraid. Be Very Afraid.
 
 

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How useful are feedback loops

Things are extremely busy here and blogging is going to be light for a few weeks. I’ll be reposting some older blog posts that are still relevant for today’s email senders.
Today’s post is a repost from November 2008. I look at the whys and hows of FBLs, address some of the objections people had to them and discuss how senders should deal with FBL mail.
There has been a very long, ongoing discussion on one of my mailing lists about whether or not feedback loops are a net good or a net harm. I believe, overall, they are a net good, but there are people who believe they are not. The biggest objection is that the lawyer mandated redaction of the To: address combined with the fact that some users use the “this is spam” button to delete unwanted email, makes it difficult for some FBL recipients to sort out the real issues from the cruft.
Redaction can be a problem for some senders, particularly for the small mailing list hosted as a hobby or contribution to the community. In order to effectively deal with FBL emails, a sender needs to have tools on the email sending side and on the FBL receiving side. This is often more overhead than the volunteer list maintainer wants to handle. Unfortunately, these senders are a minority and therefore their issues are often not addressed by the ISPs.
Some of the objections and complaints about “broken” or “useless” FBLs come from people who do not really have any history for the FBLs, where they are, what they were designed for and who their target audience is. A bit of history may help explain why things are how they are.
The First FBL
The “this is spam” button evolved from the “notify AOL” button. This button was a way email recipients could notify AOL staff about any number of problems, including threats, viruses and other unwanted emails. As time went on, this was changed to “this is spam” to encourage users to report more spam so the AOL would have the data to make delivery decisions. Eventually, AOL made the decision to share that data with some senders and ISPs. The lawyers made the decision to redact the “To:” address, but not make any other changes to the message because they believe they should not be sharing subscriber email addresses with third parties. As some people correctly point out, the lawyers are not interested in hearing from non lawyers about changing this. It is possible that another lawyer may be able to put together a position paper and convince them this stance is overly cautious. I am pretty sure, though, that no one without a legal degree will be given any audience from them.
Given the success of the AOL FBL and the demand from both ESPs and ISPs for FBLs, other ISPs started offering FBLs as well. Many of them also redacted the To: address, either just following AOL’s lead or under advice of their own counsel.
That means, as senders, we are in a situation where we really cannot make the ISPs change what they’re doing. We can either adapt our own mailing practices to cope with them or we can forego the data provided by the FBL. One of the challenges in choosing to shun the whitelist at AOL that in order to qualify for whitelisting, you have to accept a FBL. For ISPs, who want to whitelist their outgoing MTAs, but have customers sending mail, maybe running small mailing lists, or who are forwarding mail to their ISP account, this can be a problem. However, any ISP needs some sort of abuse desk automation, and this automation should be able to handle FBLs. This can also be a problem for small ESPs or companies doing in-house email marketing. They buy something off the shelf to handle mail (or install mailman) that does not do VERP or otherwise enter the specific address in the email. When faced with a redacted email they cannot do anything with the complaint.
What does the FBL email tell the FBL recipient?
This really depends on what role the FBL recipient plays in the mail transport system. Bandwidth and network service providers use the FBL as an aggregate tool. They really only deal with FBL complaints if there is a change in complaint volume about an IP, they don’t treat each complaint as a valuable source of information. Typically what happens is that an ISP abuse desk notices a spike in complaints. After investigation, they may discover that a customer machine is compromised. They then notify the customer, the customer patches or disconnects the machine and the problem is fixed.
ESPs tend treat the FBL as an unsubscribe mechanism as well as a way to monitor customers. A few FBL complaints are not necessarily a sign that the sender is spamming, but once a threshold is reached the ESP delivery / abuse team addresses the issue. Spammers can get FBLs and often use them as a way to clean lists of complainants. Some really dirty spammers even suppress those complainants from all their lists.
Is a FBL useful?
This is really something that someone else cannot tell you. Some companies find FBLs to be extremely useful, even after they have had to make investments in software (either off the shelf like our Abacus software, or something custom written internally) to send mail that will survive the FBL redaction process and to handle the actual FBL email. Some companies find the FBLs to be more trouble than they are worth. The question, however, is really one only the sender can answer.
Overall, I think FBLs are more helpful than they are harmful. They do require investment on both sides of the transaction, but does encourage senders and receivers to cooperate with one another.

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What kind of mail do filters target?

All to often we think of filters as a linear scale. There’s blocking on one end, and there’s an inbox on the other. Every email falls somewhere on that line.
Makes sense, right? Bad mail is blocked, good mail goes to the inbox. The bulk folder exists for mail that’s not bad enough to block, but isn’t good enough to go to the inbox.
Once we get to that model, we can think of filters as just different tolerances for what is bad and good. Using the same model, we can see aggressive filters block more mail and send more mail to bulk, while letting less into the inbox. There are also permissive filters that block very little mail and send most mail to the inbox.
That’s a somewhat useful model, but it doesn’t really capture the full complexity of filters. There isn’t just good mail and bad mail. Mail isn’t simply solicited or unsolicited. Filters take into account any number of factors before deciding what to do with mail.

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