I can't send emails

Question

I can't send emails with my hotmail account. I keep getting this error message:

Your message wasn't delivered because the recipient's email provider rejected it.

Answer 1

Can you use the instruction here, change the email to plain text or rich text format (basically avoid the html format) and see if it goes through:

https://support.microsoft.com/office/change-the-message-format-to-html-rich-text-format-or-plain-text-in-outlook-338a389d-11da-47fe-b693-cf41f792fefa