On Wednesday 12/11 at approx 4PM PT, Thunderbird stopped being able to log in to my sbcglobal.net POP3 account. It had been receiving emails routinely up to that time. There are two error messages associated with this. One happens if TB has been open and I ask it to download new messages using the little cloud symbol or “Get Messages”: “The account xxx@sbcglobal.net is being processed. Please wait until processing is complete to get messages.” Or if I open TB and it just starts with the login process, the error messages is a popup: “Connection to server inbound.att.net timed out.” TB manages two other accounts, both of which are functioning normally. One of them is also an sbcglobal.net account, and both sbcglobal accounts are set up identically: Port 995, SSL/TLS, Secure Mail Key (rather than OAuth2). Version is 115.18.0 32bit, Windows 22H2. Logging in to the server via a browser shows many emails that have arrived since the problem started. I have gotten nowhere with ATT/SBC, they don't seem to want to provide any support anymore if they hear the word Thunderbird. Can you help?