Yahoo delivery problems

Over the last week or so a number of people have mentioned problems with delivery to Yahoo. It seems that some emails are being erroneously rejected. Earlier this week, Yahoo posted a message to the Yahoo Postmaster announcement list saying they were aware of the problem and were working on fixing it.

some senders are seeing intermittent IP blocks when sending to Yahoo! Mail, with the SMTP error message from us citing that the block was due to a Spamhaus listing — e.g., “553 5.7.1 [BL21] Connections not accepted from IP addresses on Spamhaus PBL.” (See our full list of SMTP error messages at http://postmaster.yahoo.com/errors/ .)
If your IPs are currently not listed on any Spamhaus blocklist but you are seeing this error, please be assured that we are looking into the matter. We shall post an update once we have resolved the issue.

What I am hearing is that this is not a consistent error. Reattempting mail rejected with this message may be acceptable practice until Yahoo fixes the problem.

Another perspective on the Politico article
Introducing the "No email 'till Monday"

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Yahoo update

It has been quite a while since I have had the opportunity to share information about Yahoo here on the blog, but there is new information to share.
Yesterday, Mark Risher from Yahoo spent some time talking with people about all things spam over at Yahoo. Matt from EmailKarma posted the transcripts as well as some excerpts from the talk. The really interesting bit, for me, was confirmation that Yahoo will be bringing back their FBL in the next few weeks. I have been hearing rumors about the return of the FBL for a while now, and it seems the general timeline (fall-ish) is accurate.
Speaking of the feedback loop, there have also been rumors that Yahoo is not accepting any changes to existing feedback loops. This does not seem to be the case. According to an internal person, companies who are currently in the beta FBL program can make changes to the program by contacting the postmaster team.

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Yahoo delays, part 4: Yahoo blogs

Yahoo posted some suggestions about contacting their postmaster group over on the ymail blog.  They also explained what they were doing to solve the problems with response delays.
Some of the problem is being caused by excessive follow-up emails, either because senders did not provide all the necessary information initially or because they are asking why they have not heard anything. Each of these requires more work on the part of Yahoo and throws the queues into further disarray and puts everyone even more behind.
Yahoo asks that people be patient, they are working through things. On their end, they have added more staff to the postmaster team. They also suggest senders can help by providing ALL the information they ask for at http://postmaster.yahoo.com/ before submitting the request. Incomplete requests contribute even more to the backlog as Yahoo employees have to chase down senders to get their full information.

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Yahoo FBL returns

This morning ReturnPath and Yahoo announced the new Yahoo FBL has gone live. Signups are being accepted at http://feedbackloop.yahoo.net/. Yahoo provides the following instructions:
Yahoo! offers a Complaint Feedback Loop service, free of charge, via this site operated by Return Path. To begin the process:

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