Email news today

Ironport have rolled out an update to their rule engine which has a bug causing mail problems. According to discussion on the mailop list, the new rule engine is folding the header with a line feed (LF) rather than a carriage return (CRLF). This is breaking things, including DKIM signatures. Ironport is aware of the issue. I expect an updated rollout shortly.

AOL migrated the last few users onto the Yahoo infrastructure today. It’s really gone. Also, while looking up some info related to this post, I discovered Verizon Media has a postmaster blog hosted on Tumblr.

I’ve seen a number of reports in different areas talking about an increase in Yahoo user unknowns. The same thing happened almost a year ago. This may be when Yahoo does clean up or it could be a coincidence. Folks at Verizon Media are looking into it

Be careful purchasing lists of DigiMarCon NY 2019 Attendees. There’s at least one list being sold out there that is just a scraped list of addresses. I’ve gotten emails asking for meetings and offering services because I am on the exhibitor list. I’m actually not on the exhibitor list, nor have I ever been to that conference in any capacity.

Verizon Media Postmaster Site
Dead addresses tell us things

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More on AOL transition to Oath Infrastructure

AOL posted on their blog today about changes to DMARC reporting and FBL messages as they continue to transition domains to the OATH infrastructure. As AOL domains go to the new infrastructure, DMARC reports for those domains will be included in the existing Yahoo DMARC reports.
After the MX migration is done, they’ll start migrating the actual user mailboxes. Right now, FBL messages for AOL properties are coming from AOL and will continue to do so until the actual mailbox is transitioned to the new infrastructure. Once the mailbox is transitioned, then any FBL emails from that address will come from the Yahoo infrastructure. The blog post at AOL suggests signing up for both AOL and Yahoo FBLs during this transition phase.
It does bring up an interesting question as to whether or not the combined FBL is going to be IP based, DKIM based or a mix of both. It sounds like at least during some part of the consolidation there will be a DKIM only FBL. It could be that there will be some expansion to an IP system in the future. Or, it could be that all FBLs from AOL addresses will be based on DKIM domain.

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AOL MX Change update

The AOL postmaster team posted some information about the upcoming MX transition on their blog.

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AOL Changes

We’ve known for a while that AOL email infrastructure is going to be merging with Yahoo’s, but apparently it’s happening sooner than anyone expected.
The MXes for aol.com will be migrated to Yahoo infrastructure around February 1st. Reading between the lines I expect that this isn’t a flag day, and much of the rest of the AOL email infrastructure will be in use for a while yet, but primary delivery decisions will be made on Yahoo infrastructure.
The AOL and Yahoo postmaster teams are pretty smart so I assume they’ll have made sure that their reputation data is consistent, and be doing everything else they can do to make the migration as painless as possible. But it’s a major change affecting a lot of email, and I wouldn’t be surprised to see some bumpiness.
If you’ve done anything … unwise … with delivery to AOL addresses, such as hard-wiring MXes for delivery to aol.com, you should probably look at undoing that in the next week or so. I’m guessing the changeover will happen at the DNS level, so if you’ve nailed down delivery IPs for aol.com you might end up trying – and probably failing – to deliver to the old AOL infrastructure.
 

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