iCloud settings for e-mail notifications?

Yeah, I tried all that. Still doesn't work. Even logged into my iCloud account online to see if I was entering my username and password correctly, which I was.

Are you sure - because your posted settings are not the same as that article?

Information is here: http://support.apple.com/kb/HT4864

You have the server name wrong - it should be smtp.mail.me.com

You may need to select "use TLS". The "from" name may need to match your user name (which is supposed to be your myname@me.com address).

Yep, I tried smtp.mail.me.com and TLS on and off. No joy.

And is your "from" name the same as your user name?

Yes, it is. I'm running a check on my ReadNAS now.

Server checked out okay. My alerts were working with MobileMe, but ever since I moved to iCloud I'm having problems.

I also tried port 25, which is another outgoing port you can use, but that didn't work either. In fact. the ReadyNAS just hangs with that setup.

Check the log msmtp.log for more clues. I presume that file is included if you download logs, else you can find it via SSH at:

/var/log/frontview/msmtp.log

Maybe apple support could also help - http://www.apple.com/support/icloud/ww/