Ongoing Yahoo delays

I’ve been hearing from folks over the last few days that they’re seeing an uptick in deferrals from Yahoo! The deferrals are not uniform. ESPs report they’re seeing some, but not all, customers affected. Other ESPs aren’t seeing any changes.
It’s not just you. But it would be very worthwhile to dig into engagement and other stats. It’s possible this is a new normal at Yahoo! and they’re tightening filters to catch mail that doesn’t fit their standards but was previously difficult to filter.

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Yahoo problems

I’m seeing scattered reports today that a lot of places are seeing backed up queues to Yahoo. They’ve had some problems over the last few days and seem to be still recovering. It’s looking like it’s something internal to Yahoo. One set of error messages I’ve seen reported by numerous people is: “451
4.3.2 Internal error reading data.”
It’s not you, and it’s not spam related. But it is putting a crimp in a lot of companies attempts to send lots of email ahead of black friday and cyber monday.

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Yahoo Mail Deliverability FAQ Updated

Yahoo has updated their FAQ and listed out a number of factors they use to determine if a mail message is spam.

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Yahoo Feedback Loop

yahoo
If you are utilizing the Yahoo Complaint Feedback Loop, you should have received an email today about an upcoming change to the CFL.
The message received was:
“On June 29, 2015, we will transition Yahoo Complaint Feedback Loop (CFL) administration from Return Path to Yahoo Customer Care.
We will continue sending spam reports during this transition. However, you will need to save existing CFL information as it will not be available after the transition.
To save the existing CFL information:

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