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.

The DBL is managed as a “zero false-positive” list, safe to use by production mail systems to reject emails that are flagged by it. The DBL includes URIs (domains/hostnames) which are used in spam including phishing, fraud/”419″ or domains sending or hosting malware/viruses.
[…]DBL has a monitored automated self-service removal system.

There are more changes over at AOL. Annalivia has announced she is leaving AOL.  Anna has done an immense amount of work with senders over the years and her departure is definitely going to leave a hole. Drop by her website and wish her luck.

What this means to you: escalation paths and such are still being worked out, but the India Postmaster team and I have spent a lot of time working together in the last couple months; they’ll take care of you. The AOL postmaster website and reputation tool should also be useful. I’ll provide any further information as I get it.

Via Al Iverson, there’s a new informational source at anonwhois.org. This provides a list of domains registered behind privacy protection services.
Recently at MAAWG I had the opportunity to listen to a talk by Joseph Menn author of Fatal System Error: The Hunt for the New Crime Lords Who are Bringing Down the Internet. He was a very engaging and entertaining speaker who really seemed to understand the interplay between organized crime and spammers.

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News from MAAWG

During MAAWG a number of companies in the email space announce new initiatives, mergers, products and the like. This MAAWG is no different.
Spammers adjust to security trends. This is not really news, spammers have been adjusting to new security measures since folks started blocking from: addresses back in ’95 and ’96. The tactics are different and developing, but for every security hole that is blocked, spammers will search for another hole to exploit. The unfortunate truth is that end user is the weak point, and spammers and scammers are very very good at social engineering.
Spam statistics stalemate. Spam is still accounting for approximately 90% of all email traffic.
Cloudmark acquires Bizanga. I talked to some of the Cloudmark folks and they seem very excited with their acquisition of the Bizanga MTA and email technology.
Bizanga Storage announced. Bizanga Store is a scalable storage system brought to you by some of the people who were instrumental in building the Bizanga MTA acquired by Cloudmark.
ReturnPath announced partnership with RPost. Yet more ongoing changes in the certification field.

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Keep subscribers happy

Mark Brownlow writes about engagement. “…the people we really need to keep happy are the subscribers.” Go read the whole thing.

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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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