This is an issue on Yahoo’s end and they are working on it currently. Many people in the deliverability community are reporting the same thing.
From: mailop <mailop-boun...@mailop.org> On Behalf Of Michael E. Weisel via mailop Sent: Wednesday, August 9, 2023 4:16 PM To: mailop@mailop.org Subject: [mailop] Help With a Sudden AOL/Yahoo Issue Hi Mailop community. We have experienced a sudden Yahoo/AOL/Verizon block for one of our clients that we are trying to figure out. We saw no indication of any issues until we started seeing TSS04 messages in the logs around 3:00pm today. It would be greatly appreciated if someone on the list from the AOL/Yahoo/Verizon team could please reach out to me. Thanks, Michael Michael E. Weisel CTO / Deliverability Lead Gold Lasso (301) 990-9857 Corporate (240) 813-0174 Direct Dial
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