April 18th comcast broke my email service

Morning of april 17 th everything was fine.  Morning of april 18th my email application said it could not send emails.

send/receive error:  "your server does not support the connection encryption type you have specified"

I have windows 7 because my solidworks application can't run on windows 10/11 ..... so the latest version of outlook I could use is 2016, bought it, downloaded it, and still my email is broken.  When I called comcast there was a message before getting to the prompts that said on april 17, 2023 comcast is going to not support old security email applications, and they also said at this time they would not do anything about it.  Web bases email works fine, so I guess if I can't resolve this that is what I will have to resort to.

computer: dell m6800

OS: windows 7 64 bit professional

email: outlook 2016 professional