AOL improving

I’m hearing from lots of folks that they’re seeing some improvement in delivery to AOL accounts.
As everyone can imagine, the AOL situation has been a common thread of discussion on many delivery lists. One person even commented at how fragile the AOL mail server seems. My own thoughts are a little different. The AOL mail system is notoriously complex and integrated. Many of the folks who built it have been laid off or otherwise moved on to other companies. I know there are still smart, competent people riding herd on the AOL mail servers, but I expect they don’t have the resources to do the ongoing maintenance and the fire fighting and all the other tasks that a mailserver handling billions of emails needs.
What this means is that the AOL mail system has been suffering from bit rot for at least 2 years. It is to the original designers’ credit that it’s taken this long before there were major problems like we’ve seen over the last week.

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AOL transmitting 4xx error for user unknown

AOL is currently returning “451 4.3.0 <invaliduser@aol.com>: Temporary lookup failure” in some cases when they really mean “550 user unknown.” This message from AOL should be treated as 5xx failure and the message should not be retried (if at all possible) and the failure should be counted as a hard bounce for list management purposes.
This is something broken at AOL’s end, and the guys with the magic fingers that keep the system running are working to fix it. Right now there doesn’t seem to be an ETA on a fix, though.
Even if you are a sender who is able to stop the retries, you may see some congestion and delays when sending to AOL for the time being. Senders who don’t get the message, or who are unable to stop their MTAs from retrying 4xx mail will continue to attempt delivery of these messages until their servers time out. This may cause congestion for everyone and a noticeable  slowdown on the AOL MTAs.
AOL blog post on the issue
HT: Annalivia

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Suing spammers

I’m off to MAAWG next week and seem to have had barely enough time to breathe lately, much less blog. I have a half written post, but it’s taking a little more research to put together. That can wait until I get the chance to do the research.
Instead I thought I’d talk about the North Coast Journal article “The Rise and Fall of a Spam Crusader.” It’s quite an interesting article and looks into the personal and business sacrifices that people make in order to chase down spammers.
In my experience a lot of the serial litigators have very poor practices around data collection and analysis. They don’t collect evidence, they just collect email and then make assertions and assumptions. This not every effective when having to convince a judge that you are right.
The article actually does nothing to change this impression. The cases ASIS won are the cases where the defendants didn’t respond. That also means that ASIS couldn’t collect.
I do disagree with Mr. Singleton, the lawyer, where he says CAN SPAM is dead. In many cases I’ve seen there aren’t clear CAN SPAM violations. So if he’s trying to sue these spammers under CAN SPAM his cause of action is wrong. Secondly, the article goes on to talk about the broader implications.

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News and announcements: March 1, 2010

Some news stories and links today.
Spamhaus has announced their new domain block list (DBL). The DBL is a list of domains that have been found in spam.

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