thanks for your reply. I spent a couple of hours with the Delivery Team and they were not able to help. I have applied to get the account self-authenticated, but apparently this takes several days.
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Beginning December 20, 2024 all emails going to ATT email addresses are being Bounced as blocked.
This includes att.net, sbcblobal.net, etc.
Prior to December 20th we had less than 1% of our total email list Bounced as blocked. Since then, the percentage has risen to 17%. After looking at the stats, we discovered that it was the Att emails that we suddenly being blocked. This has never happened in the past.
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