And an update on Gmail/AOL fun, also via IP:
From: Carl Hutzler [XXX@aol.com] Sent: Tue 4/25/2006 7:02 AM To: email@example.com; David Farber Subject: Update [Re: [IP] AOL blocking Gmail] As promised, an update. Late last night around 11pm, we added into our whitelist a number of Gmail IP addresses for their outbound systems. Evidently gmail had sent us an email asking for more servers to be added to our whitelist for protection but had done so at 4:45pm yesterday. The request had not yet been processed. I esclaated internally and they got it done. So all is well now. So now we will have to see if gmail's outbound spam problem is high on their list to fix or whether they are more interested in adding capacity to accommodate the increase in outbound spam, umm mail ;-) Oh, and one other thing, all their spam is domainkeys signed. This emergency whitelisting combined with the fact that all their spam is signed is a little ironic if you have been following the dearaol.com debate. ;-) -Carl
This just came through Dave Farber’s IP list:
Date: April 24, 2006 5:05:08 PM EDT To: firstname.lastname@example.org Subject: AOL blocking Gmail Dave, just had a lively and interesting conversation with an AOL postmaster phone number. When they get reports from their users of spam from a given host, they start rate-limiting mail from that source. When a given source is huge, it's inevitable that there will be spam-marked mail from within that space, and even if it's just amateur users who mark as spam mail that comes to them that they don't want to see, whether it's spam or not: with two larger user bases, it can easily add up to a number of complaints that triggers aol's mechanism. So, net result, if you have a gmail account and try to write to aol.com addresses now, you will probably not get through immediately. You will probably get a message from google telling you that your message has been delayed and giving an aol postmaster address, http://postmaster.info.aol.com/errors/421rlynw.html, that tells you that your site (i.e., Gmail) is being rate-limited and delayed inbound to aol. AOL's response to a complaint is to tell the Gmail user to tell Google that there's a problem. Clash of the titans?