Cannot send message using the server iCloud

Hi Pacificgreen,

Thanks for coming to Apple Support Communities for help sending email with iCloud.

It does appear you have been to the correct article. Did you try all steps?

Does this happen on more than one device?

What happens if you try sending at iCloud.com through your browser?

Also see: If you can’t send or receive email on your Mac.

"If no other solutions work, try setting up your email account again. To do that, remove your email account, then add the account back."

Let us know further details.

Have a fantastic day!