Cannot send any mail from differing email addresses on mac mail

Something changed overnight and im not sure what happened. I have a few different email addresses on my mail, each of which has a different SMTP. For two days I havent been able to send emails from any of these email addresses but i am receiving emails....

I am able to send email froms other devices with the same SMTP setup.

Im have since the issue upgraded to MacOS Tahoe 26.01 but there is no difference.

I have 36 GB free space.

I have tested the mails on Outlook app and they work. I just dont want to have to change...